Widiastoeti H, Maulidah Narastri. Improvement of Internal Control Through Operational Standards for Procedures for Procurement of The Equipment and Services at ’D’ Type Hospital in Sumenep District. enrichment [Internet]. 2021Apr.8 [cited 2026Jul.5];11(2):373-7. Available from: https://enrichment.iocspublisher.org/index.php/enrichment/article/view/108