Widiatma, Akhmad Arif, Hasmyati, and Asran. “Student Motivation in Learning PJOK: A Study on Lower Passing Volleyball”. ETDC: Indonesian Journal of Research and Educational Review 1, no. 4 (September 27, 2022): 479–488. Accessed April 24, 2025. https://etdci.org/journal/ijrer/article/view/310.