Miranda, Suci, and Wawan Tripiawan. “Perbandingan Penentuan Waktu Baku Menggunakan Metode Time Study Dan Critical Path Method (CPM)”. Jurnal Sistem dan Manajemen Industri 3, no. 1 (July 31, 2019): 19-30. Accessed August 7, 2020. https://e-jurnal.lppmunsera.org/index.php/JSMI/article/view/1418.