Carpenter, J., B. Stevenson, és E. Carson. „Knowledge Is the Key to Effective Pain Management-Implementing an Elective Course in a Baccalaureate Nursing Program”. Acta Sana, köt. 2, sz. 2, 2007. január, o. 30-35, https://iskolakultura.hu/index.php/actasana/article/view/18387.