Nasution, I., Yanti, E. and Insan, M. (2025) “Analysis Of Non-Physical Work Environment, Work Ethics, Work Discipline On Employee Work Productivity Asn At Lldikti Region 1 North Sumatra”, Jurnal Fokus Manajemen, 5(3), pp. 371-380. doi: 10.37676/jfm.v5i3.8949.