Soegiyanto, Teguh Santosa;. “PENGEMBANGAN ALAT BANTU RETURN BOARD UNTUK FOREHAND TOPSPIN TENIS MEJA”. Jurnal Pedagogik Olahraga 2, no. 2 (December 5, 2016): 30–48. Accessed June 9, 2025. https://jurnal.unimed.ac.id/2012/index.php/jpor/article/view/4513.