HARTIN NST, Venny Fraya; GAOL, Jonner Lumban; LUBIS, Muhammad Ansori. PENGARUH ETIKA KERJA TERHADAP KUALITAS PELAYANAN MELALUI PROFESIONALISME KERJA PADA CV. SENTOSA DELI MANDIRI MEDAN. JURNAL PROINTEGRITA, [S.l.], v. 6, n. 3, p. 201 - 213, dec. 2022. ISSN 2655-8971. Available at: <https://jurnal.darmaagung.ac.id/index.php/jurnalprointegrita/article/view/2437>. Date accessed: 25 june 2024. doi: http://dx.doi.org/10.46930/jurnalprointegrita.v6i3.2437.