Gamar, M. M., Sondhadji, S., Arifin, I. and Ulfatin, N. (2016) “Preparation and implementation of quality assurance system based on accreditation of study programs in higher education”, Journal of Social Sciences (COES&RJ-JSS), 5(3), pp. 238–251. doi: 10.25255/jss.2016.5.3.238.251.