Guiwo, R. ., M. . Presentacion, N. A. C. . Deguzman, A. . Bobadilla, and F. A. . Sison, MBA. “An Office Procedure Developmental Study of Human Resource and Purchasing Department of XYZ Corporation”. Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research, vol. 1, no. 1, Apr. 2019, https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/1861.