DERMAWAN, A.; PERMADI, A.; BARNANDA RIZKY, O. Kontribusi Sit Up Dan Back Up Terhadap Keterampilan Throw In pada Siswa Ssb Harapan Bangsa Usia 17-21 Tahun. SPORT GYMNASTICS : Jurnal Ilmiah Pendidikan Jasmani, [S. l.], v. 3, n. 2, p. 170–180, 2022. DOI: 10.33369/gymnastics.v3i2.24245. Disponível em: https://ejournal.unib.ac.id/gymnastics/article/view/24245. Acesso em: 7 may. 2024.