Sulthan, Nafis, Jaswadi Jaswadi, and Sugeng Sulistiono. 2021. “A Case Study of the Analysis of Business Process Modelling and Notation for Purchase Order and Product Receipt in Small Medium-Sized Enterprises”. Journal of Industrial Engineering & Management Research 2 (5), 44 - 50. https://doi.org/10.7777/jiemar.v2i5.193.