Gulo, N., and S. Zebua. “ANALISIS SELISIH BIAYA TENAGA KERJA LANGSUNG PT. HAGANAMO MANDIRI”. Jurnal Manajemen Retail Indonesia (JMARI), Vol. 2, no. 1, Feb. 2021, pp. 50-57, doi:https://doi.org/10.33050/jmari.v2i1.1432.