Farida, Elly Kartika, et al. “The Analysis of Factors Related to The Implementation of The COVID-19 Health Protocol For Cadets at Malahayati Merchant Marine Polytechnic of Aceh in 2021”. STRADA Jurnal Ilmiah Kesehatan, vol. 10, no. 1, May 2021, pp. 1186-93, doi:10.30994/sjik.v10i1.772.