Hardiono, H., M. A. Umar, and E. Hidyantari. “Zonation System Policy Implementation in the Admission of New Students in the City of Surabaya, East Java, Indonesia”. The International Journal of Business & Management, vol. 8, no. 12, Dec. 2020, doi:10.24940/theijbm/2020/v8/i12/BM2012-003.