Aditama, Kokoh, Hafidulloh, Gogi Kurniawan, dan Dani Rohmati. “Effects of Work Factors on Employee Performance at TKBM Usaha Karya Cooperative in Surabaya ”. Improvement: Jurnal Manajemen dan Bisnis 6, no. 1 (Maret 25, 2026): 20–30. Diakses Oktober 14, 2026. https://journal.um-surabaya.ac.id/improvement/article/view/30983.