Anwar, Syahferi. “The Relationship Of Perception With Blood Donation Interest In Pmi, Serdang Bedagai District, 2021”. Science Midwifery 10, no. 2 (June 30, 2022): 1811–1815. Accessed August 26, 2026. https://midwifery.iocspublisher.org/index.php/midwifery/article/view/550.