Nurcholis, Ermin, Sulaiman Sulaiman, and Fakhruddin Fakhruddin. “Implementasi Buku Ajar PJOK Kelas IX Pada SMP Piloting Kabupaten Kendal”. Journal of Physical Education and Sports 6, no. 2 (September 5, 2017): 117-124. Accessed July 18, 2024. https://journal.unnes.ac.id/sju/jpes/article/view/17384.