Batubara, Irwan. “KOMUNIKASI TERAPEUTIK PADA PASIEN PRE OPARATIF EFEKTIF MENURUNKAN TINGKAT KECEMASAN PASIEN”. Jurnal Ilmiah PANNMED (Pharmacist, Analyst, Nurse, Nutrition, Midwivery, Environment, Dentist) 9, no. 3 (January 28, 2019): 2250–252. Accessed August 27, 2025. https://ojs.poltekkes-medan.ac.id/pannmed/article/view/221.