Widyastuti, Merina, Nur Wulan Adhani Lakato, Nur Muji Astuti, Ninik Ambarsari, Christina Yuliastuti,  Imroatul Farida, and Sri Anik Rustini. “Self Confidence and Anxiety of Health Volunteers While Doing First Aid for Accident Victims in Surabaya”. Critical Medical and Surgical Nursing Journal (CMSNJ) 11, no. 1 (June 14, 2022): 10–14. Accessed February 24, 2024. https://e-journal.unair.ac.id/CMSNJ/article/view/36045.