M. Muhyi, M. Hanafi, A. Asgi Sukmana, I. G. Darma Utamayasa, and B. . Rangga Prastyana, “The effectiveness of krwanjang game implementation on sepak sila’s skills in sepak takraw game at Surabaya sepak takraw academy”, SPORTIF, vol. 7, no. 3, pp. 367–377, Dec. 2021.