1. Ahmi, A., & Mohamad, R. (2019). Bibliometric analysis of global scientific literature on web accessibility. International Journal of Recent Technology and Engineering, 7(6), 250-258.
2. Archer, K. R. (2012). The historical context and development of professional learning communities. [Doctoral dissertation, University of Kansas]. KU ScholarWorks. https://kuscholarworks.ku.edu/handle/1808/12357
3. Beteille, T., Ding, E., Molina, E., Pushparatnam, A., & Wilichowski, T. (2020). Three principles to support teacher effectiveness during covid-19. World Bank Publications. https://doi.org/10.1596/33775
4. Hajar, M., & Siti Mistima, M. (2021). Sorotan literatur bersistematik terhadap komuniti pembelajaran profesional dalam kalangan guru matematik sekolah. Malaysian Journal of Social Sciences and Humanities (MJSSH), 6(10), 164-176. https:// 10.47405/mjssh.v6i10.1066
5. Hallinger, P., & Kovačević, J. (2019). A bibliometric review of research on educational administration: Science mapping the literature, 1960 to 2018. Review of Educational Research, 89(3), 335-369. https://doi.org/10.3102/0034654319830380
6. Hallinger, P., & Kovačević, J. (2021). Science mapping the knowledge base in educational leadership and management: A longitudinal bibliometric analysis, 1960 to 2018. Educational Management Administration and Leadership, 49(1), 5-30. https://doi.org/10.1177/1741143219859002
7. Havea, P. H., & Mohanty, M. (2020). Professional development and sustainable development goals. In W. L. Filho, A. M.Azul, L. Brandli, P. G. Ozuyar, & T. Wall (Eds.), quality education (pp. 1-12). Springer, Cham. https://doi.org/10.1007/978-3-319-69902-8_53-1
8. Hord, S. E. (2004). Learning together: leading together. Changing schools through PLCs. Teachers College Press.
9. Liberati, A., Altman, D. G., Tetzlaff, J., Mulrow, C., Gotzsche, P. C., Ioannidis, J. P. A., Clarke, M., Devereaux, P. J., Kleijnen, J., & Moher, D. (2009). The PRISMA statement for reporting systematic reviews and meta-analyses of studies that evaluate health care interventions: Explanation and elaboration. Journal of Clinical Epidemiology, 62(10), e1-e34. https:// doi.org/ 10. 1016/j. jclin epi. 2009. 06. 006
10. Ogegbo, A. A., Gaigher, E., & Salagaram, T. (2019). Benefits and challenges of lesson study: A case of teaching physical sciences in South Africa. South African Journal of Education, 39(1). https://doi.org/10.15700/saje.v39n1a1680
11. Tian, X., Geng, Y., Sarkis, J., & Zhong, S. (2018). Trends and features of embodied flows associated with international trade based on bibliometric analysis. Resource Conservervatice Recycle, 131, 148157. https://doi.org/10.1016/j.resconrec.2018.01.002
12. UNESCO. (2015, May). Education 2030: Incheon declaration and framework for actioni: towards inclusive and equitable quality education and lifelong learning for all. UNESCO Digital Library, UNESCO. https://unesdoc.unesco.org/ark:/48223/pf0000243278
13. Wang, Z. H., Zhao, Y. D., & Wang, B. (2018). A bibliometric analysis of climate change adaptation based on massive research literature data. Journal of Cleaner Production, 199, 1072–1082. https://doi.org/10.1016/j.jclepro.2018.06.183
14. Wasylenki, K. (2020). Leadership challenge paper in support of UNESCO futures of education 2050: professional learning communities in a pandemic. [Unpublished doctoral dissertation, University of Alberta]. https://education-futures-partnership.education/wp-content/uploads/2021/02/Kelsey-W.-Feb-10-.pdf
15. Zakaria, R., Ahmi, A., Ahmad, A. H., & Othman, Z. (2021). Worldwide melatonin research: a bibliometric analysis of the published literature between 2015 and 2019. Chronobiology International, 38(1), 27–37.