Ervil, R. and Rhamadan, D.Y. 2021. Productivity analysis using method Murvin E. Mundel case study PT. Johan Sentosa. Jurnal Pendidikan Teknologi Kejuruan. 4, 4 (Nov. 2021), 107–110. DOI:https://doi.org/10.24036/jptk.v4i4.21523.