Puspasari, Ria, Teguh Santoso, and Nur Chayati. 2020. “Gambaran Tingkat Pengetahuan Staff Statsiun Kereta Api Yogyakarta Tentang Penatalaksanaan Awal Henti Jantung ”. Journal of Midwifery, Nursing and Health Research 1 (1):1-5. http://thejournalish.com/ojs/index.php/jmnh/article/view/96.