Zega, Nomi, Irmayani Irmayani, and yurnalis yurnalis. “PENGUKURAN DAN ANALISIS PRODUKTIVITAS MENGGUNAKAN METODE DAVID J. SUMANTH DI CV. TILAH BAKERY PADANG”. UNES Journal of Scientech Research 4, no. 2 (December 31, 2019): 022-037. Accessed October 21, 2025. https://ojs.ekasakti.org/index.php/UJSR/article/view/308.