Santoso, R. L. ., and M. J. . Luthfi. “Internship Program for University Student Skill Development: A Case Study in UIN Sunan Kalijaga”. Proceeding International Conference on Religion, Science and Education, vol. 1, Feb. 2022, pp. 191-8, http://sunankalijaga.org/prosiding/index.php/icrse/article/view/792.