Thanh Nguyen, Danadyaksa Adyaraka, J. T. S. D. A. H. A. Z. A. P. “Determination of New Office Location Using Weighted Product Method”. International Journal of Advanced Science and Technology, Vol. 29, no. 3, Mar. 2020, pp. 5861- 5867, http://sersc.org/journals/index.php/IJAST/article/view/6625.