1. Abdul Aziz, A. R. 2000. Kemahiran sosial asas. Utusan Publication & Distributor : Kuala Lumpur.
2. Ambady, N. & Weisbuch, M. 2010. Nonverbal behavior. In Fiske, S. T., Gilbert D. T. & Lindzey, G. (Eds.). Handbook of social psychology : 464-497. Hoboken, New Jersey: Wiley Publishers.
3. Blanck, P. D., Rosenthal, R., Snodgrass, S., DePaulo, B. & Zuckerman, M. 1981. Sex differences in eavesdropping on nonverbal cues: Developmental changes. Journal of Personality and Social Psychology. Vol 41:391-396.
4. Burgoon, J. K., Guerrero, L. K. & Manusov, V. 2011. Nonverbal signals. In Knapp, M. L. & Daly, J. (Eds.). Handbook of interpersonal communication: 239-280. Thousand Oaks, California : Sage Publications.
5. Dr Shipra Agarwal & Mr Ashish Garg. 2012. The importance of communication within organizations: A research on two hotels in Uttarakhand. Journal of Business and Management. Vol 3(2):40-49.
6. Gerald H., Graham, Jeanne Unruh & Paul Jennings. 1991. The impact of nonverbal communication in organizations: A survey of perceptions. The Journal of Business Communication. Vol 28(1): 45-62.
7. Hall, J. 1978. Gender effects in decoding nonverbal cues. Psychological Bulletin. 68:845- 857.
8. Ili Kristiyanti. 2012. Pengaruh komunikasi non-verbal terhadap kepuasan pelanggan. Jurnal Manajemen.Vol XII. No.1:60-66.
9. Isenhart, M. 1980. An investigation ofthe relationships of sex and sex role to the ability to decode nonverbal cues. Human Communication Research.6 :309-317.
10. Knapp, M. L. 2011. An historical overview of nonverbal research. In V. Manusov & M. L. Patterson (Eds.), The sage handbook of nonverbal communication: 3-19. Thousand Oaks, California : Sage Publications.
11. Mehrabian, A. & Wiener, M. 1967. Decoding of inconsistent communications. Journal of Personality and Social Psychology. 6(1) :109-114.
12. Mehrabian, A. & Ferris, D. 1967. Inference of attitudes from nonverbal communication in two channels. Journal of Consulting Psychology. 31 : 248-252.
13. Mehrabian, A. 1971. Silent messages. Belmont, California: Wadsworth Pub. Co.
14. Mohd. Baharudin Othman dan Mohd. Khairie Ahmad. 2004. Pengantar komunikasi. Sintok: Penerbit Universiti Utara Malaysia.
15. Nisawatun Ulmi. 2017. Komunikasi verbal dan non verbal dalam proses tahfidz Al-Quran. Tesis Sarjana.
16. Nor Azlina Harun. 2010. Hubungan antara komunikasi dalam organisasi terhadap kepuasan kerja. Jurnal e-Kemanusiaan. 1-24.
17. Omardin, A. & Azahar Raswan Dean, W.D. 1990. Komunikasi dalam organisasi. Kuala Lumpur: Dewan Bahasa dan Pustaka.
18. Ranjit, S. M. 2004. Mempertingkatkan kualiti peribadi: Menjana diri untuk mencapai prestasi unggul di tempat kerja. Kuala Lumpur: Cetakrapi Sdn. Bhd.
19. Richmond, V.P. & McCrosky, J.C. 1992. Organizational communication for survival. New Jersey: Prentice Hall, Englewood Cliffs.
20. Richmond, V. A. & McCroskey, J. C. 2004. Nonverbal behavior in interpersonal relations. 5th ed. Boston: Pearson.
21. Ruben, Brent D. & Stewart, Lea P. 2005.Communication and human behaviour. USA: Alyn and Bacon.