Boy Hutaperi, and Lidia Dewi. “ANGINA PECTORIS TIDAK STABIL (UAP)”. Nusantara Hasana Journal 5, no. 7 (December 30, 2025): 325–337. Accessed March 29, 2026. https://www.nusantarahasanajournal.com/index.php/nhj/article/view/1797.