Peprah, Williams Kwasi. “International Students’ Satisfaction of ISO 9001 Certified Education: A Basis for a Preventive and Corrective Program”. Abstract Proceedings International Scholars Conference 6, no. 1 (October 29, 2018): 195. Accessed September 22, 2021. https://jurnal.unai.edu/index.php/isc/article/view/1273.