1. Al-Ani, Radeef, A.S. and Ghazi, F.G. (2015). Depression, Anxiety and Stress among Undergraduate Science Students in Malaysia. 17th Johor Mental Health Conference, Malaysia, 17-18 April 2015, Unpublished. Retrieved from http://irep.iium.edu.my/42809/
2. Andrews,B., Wilding, J.M.(2004). The relation of depression and anxiety to life-stress and achievement in students. Br J Psychol., 95,509-521.
3. Bayram, N. & Bilgel, N. (2008). The prevalence and socio-demographic correlations of depression, anxiety and stress among a group of university students. Social Psychiatry and Psychiatric Epidemiology, 43(8), 667-672. doi: 10.1007/s00127-008-0345-x
4. Bernhardsdóttir, J. & Vilhjálmsson, R. (2013). Psychological distress among university female students and their need for mental health services. Journal of Psychiatric and Mental Health Nursing, 20(8), 672-678. doi: 10.1111/jpm.12002
5. Brockelman, K. F. & Scheyett, A. M. (2015). Faculty perceptions of accommodations, strategies, and psychiatric advance directives for university students with mental illnesses. Psychiatric Rehabilitation Journal, 38(4), 342-348.
6. Brook, C. A. & Willoughby, T. (2016). Social anxiety and alcohol use across the university years: Adaptive and maladaptive groups. Developmental Psychology, 52(5), 835-845. http://dx.doi.org/10.1037/dev0000110
7. Diagnostic and Statistical Manual of Mental Disorders 2013 (DSM-5 2013). Retreived from www.DSM5.org.
8. Ellawela, Y.G., & Fonseka. P. (2011). Psychological distress, associated factors and coping strategies among female student nurses in the Nurses’ Training School Galle. Journal of the College of Community Physicians of Sri Lanka. 16 (1),23-29.
9. Emslie GJ, Mayes TL, Ruberu M.(2005). Continuation and maintenance therapy of early-onset major depressive disorder. Paediatr Drugs,7,203-217.
10. Gan, W.Y., Mohd Nasir, M.T., Shariff, Z.M. and Hazizi, A.S. (2011).Disordered Eating Behaviours, Depression, Anxiety and Stress among Malaysian University Students. College Student Journal, 45, 296. Retrieved from http://connection.ebscohost.com/c/articles/61863660/disordered-eating-behaviors-depression-anxiety-stress-among-ma laysian-university-students
11. Hanna Lára Harðardóttir. (2017). Educational Anxiety among University Students in Iceland:Association with Gender and Educational Level. Retrieved from https://skemman.is/bitstream/1946/28395/1/BSc_thesis_skemman.pdf
12. Institute for Public Health (IPH) (2015). National Health and Morbidity Survey 2015 (NHMS2015). Vol. II: Non-Communicable Diseases, Risk Factors & Other Health Problems. Ministry of Health:Kuala Lumpur
13. Kausar, R (2010). Perceived stress, academic workloads and use of coping strategies by university students. Journal of Behavioural Sciences, 20, 31-45. Retrieved from https://search.proquest.com/docview/612887679?accountid=32710 http://dx.doi.org/10.1037/prj0000143
14. Wiedemann,K. (2015). Anxiety and Anxiety Disorders. International Encyclopedia of the Social & Behavioral Sciences, 1,804-810.
15. Klomek, A.B., Marrocco,F., Kleinman,M., Schonfeld, I.S.,& Gould, M.S. (2008).Peer victimization, depression and suicidiality in adolescents. Suicide Life Threat Behav, 38: 166-180.
16. Kuruppuarachchi, K. A. J. M., Somerathna, S., Madurapperuma, B. D., & Talagala, I. M. M. (2012). Factors associated with psychological distress among B.Sc. undergraduates of the Open University of Sri Lanka. Annual Academic Session, 2012, Open University of Sri Lanka. Retreived from http://digital.lib.ou.ac.lk/docs/bitstream/70130012 2/541/1/OU5161_ 000.pdf. (accessed on 25/09/2015).
17. Maina,G.,Mauri,M. & Rossi,A. (2016). Anxiety and depression. Journal of Psychopathology,22,236-250.
18. Majumdar, B. & Ray, A. (2010). Stress and coping strategies among university students: A phenomenological study. Indian Journal of Social Science Research, 7(2), 100-111.
19. Manpreet, K., & Maheshwari, S. K. (2015). Depression, anxiety and stress among postgraduate nursing students. International Journal of Therapeutic Applications,21 12-18.
20. Niemi PM & Vainiomäki P. T.(1999). Medical Students’ Academic Distress, Coping, and Achievement Strategies During the Preclinical Years. Teach Learn Med,11,125-134.
21. Prima,V., Muhammad Nubli,A.W.& Ahmad.O.(2010). A Research for Identifying Study Anxiety Sources among University Students. International Education Studies,3(2), 189-196. What is an anxiety disorder? Retreived from https://www.health.gov.au/internet/main/publishing.nsf/content/6E02F4C9EA81857FCA257BF000212085/$File/whatanx2.pdf
22. World Health Organization (2013) WHO Definition of Health. WHO, Geneva. http://www.who.int/about/definition/en/print.html
23. Yazdani,M., Rezaei.,S. & Saeid,P. (2010). The effectiveness of stress management training program on depression, anxiety and stress of the nursing students. IJNMR,15(4), 208-215.