Wulandari I, Andria Y, Aini K, Agus A, Amra F. Tennis service teaching materials for student of faculty of sport science (FSS) – Universitas Negeri Padang (UNP). lingcure [Internet]. 2022Apr.28 [cited 2026May16];6(S5):321-8. Available from: http://www.lingcure.org/index.php/journal/article/view/2179