Ritonga, K., Marnis Nasution, & Sahat Parulian Sitorus. (2021). Analysis of Promethee II Method Determines The Best Cooking Oil Ayam Penyet Cindelaras Rantauprapat. Jurnal Mantik, 5(1), 64-69. https://doi.org/10.35335/mantik.Vol5.2021.1265.pp64-69