Hidayat, C. ., A. S. . Lengkana, R. A. . Fauzi, A. . Rohyana, M. Rosalina, D. B. . Hermawan, and D. . Purwanto. “Levelling System Model: Approach to Physical Literacy”. International Journal of Learning, Teaching and Educational Research, vol. 21, no. 11, Nov. 2022, pp. 334-56, http://ijlter.myres.net/index.php/ijlter/article/view/1470.