Widyastuti, M., N. W. A. Lakato, N. Muji Astuti, N. Ambarsari, C. Yuliastuti,  ImroatulFarida, and S. A. Rustini. “Self Confidence and Anxiety of Health Volunteers While Doing First Aid for Accident Victims in Surabaya”. Critical Medical and Surgical Nursing Journal (CMSNJ), vol. 11, no. 1, June 2022, pp. 10-14, doi:10.20473/cmsnj.v11i1.36045.