M. Johan, Winda Evyanto, Gaguk Rudianto, Robby Satria, and Zia Hisni Mubarak, “ENGLISH INTRODUCTION PADA KOHAI KARATE DI DOJO RAUDHATUL JANNAH PERUMAHAN TIBAN RAYA BATAM”, JURNAL PUAN INDONESIA, vol. 4, no. 1, pp. 45–50, Jul. 2022.