Ardiana, I. D., T. Andjarwati, and A. Wulandari. “ANALYSIS OF THE IMPLEMENTATION OF STANDARD OPERATING PROCEDURE, ORGANIZATIONAL CITIZENSHIP BEHAVIOUR AND WORK COMPETENCY TOWARDS PRODUCTIVITY AND EMPLOYEES PERFORMANCE OF SURABAYA MERCHANT MARINE POLYTECHNIC”. JMM17 : Jurnal Ilmu Ekonomi Dan Manajemen, Vol. 7, no. 2, Sept. 2020, pp. 28-36, doi:10.30996/jmm17.v7i2.4559.