Ngatilah, Yustina. “Pemberian Insentif Kepada Group Karyawan Berdasarkan Kompetensi Spencer”. Jurnal Teknik Industri 10, no. 2 (February 9, 2012): 167–172. Accessed July 4, 2024. https://ejournal.umm.ac.id/index.php/industri/article/view/562.