MAQBULATULLAH, B.; HIDAYATULLAH, M. F.; PURNAMA, S. K. Experimental Study of Demonstration Exercise Models on the Performance of Tennis Field Service Biomechanics: Studi Eksperimen Model Latihan Demonstration Terhadap Performa Biomekanika Service Tenis Lapangan . Procedia of Social Sciences and Humanities, v. 3, p. 250-255, 1 Jun. 2022.