Solikin, M., Musyafa, M.A., Yazid, A.S. and Mulyanto, A. 2013. A Design and A Development of A Web Based Purchase Information System. IJID (International Journal on Informatics for Development). 2, 2 (Dec. 2013), 1–6. DOI:https://doi.org/10.14421/ijid.2013.%x.