Johan, J., Susanto, Y., Joe, Y., & Robby, R. (2010). Analisis dan Perancangan Aplikasi Pendukung Erp Sap R/3 Modul Sales and Distribution PT. United Tractors, Tbk. ComTech: Computer, Mathematics and Engineering Applications, 1(2), 645-655. https://doi.org/10.21512/comtech.v1i2.2564