Adi Pamungkas, K. A., and Pungki Indarto. “The Impact of Drill and Strokes Training Methods on the Accuracy of Smash Direction in Badmiton”. Jurnal Pendidikan Jasmani (JPJ), Vol. 2, no. 2, Dec. 2021, pp. 65-75, doi:10.55081/jpj.v2i2.475.