Ngatilah, Yustina, and C. Indri Parwati. “Analisis Kelayakan Investasi Perbaikan Kualitas Pelayanan Di AJB Bumi Putera 1912 Cabang Sidoarjo”. Jurnal Teknik Industri 12, no. 2 (February 18, 2012): 126–132. Accessed November 23, 2024. https://ejournal.umm.ac.id/index.php/industri/article/view/550.