1. Aceta. P. (2015). The Effect of Deep Breathing Relaxation and Murattal Surat Arrahman Therapy on Anxiety. http//www//respiratory.co.id. (accessed March 2 2019).
2. Brunner & Suddarth. (2012). Textbook of Medical Surgical Nursing. Jakarta : EGC
3. Dharma, K.K. (2015). Nursing Research Methodology. Jakarta : Trans Info Media.
4. Republic of Indonesia Ministry of Health. (2012). Republic of Indonesia Health Profile 2012, (online). Available.http://www//.depkes.go.id.
5. Aceh Health Department. (2013). Aceh Health Service Profile 2013. http//www//dinkes.aceh.go.id.