A. Silalahi, “ENGLISH FOR SPECIFIC PURPOSES MATERIAL ENRICHMENT: APPLICATION OF STANDARD TRAINING OF CERTIFICATION OF WATCHKEEPING (STCW) YOUTUBE VIDEOS ON CADET’S LISTENING COMPETENCY”, Int. Conf. Adv. Transp. Eng. Appl. Soc. Sci., vol. 2, no. 1, pp. 1013-1021, Nov. 2023.