et. al., Ingrid Larasati Agustina,. “Does Istishna and Qardh Financing Affect Profitability?”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 8 (April 24, 2021): 607–611. Accessed May 3, 2024. https://turcomat.org/index.php/turkbilmat/article/view/2858.