Ardika, M. A. D., Mesterjon, M. and Febrianti , M. . (2021) “The Effect of Hand Grip and Pull Up Exercises on Service Skills for Volleyball Extracurricular at SMK Negeri 3 Seluma”, Sinar Sport Journal, 1(2), pp. 198–203. doi: 10.53697/ssj.v1i2.363.