Fawcett, Jacqueline. ┬źMiddle Range Nursing Theories Are Necessary for the Advancement of the Discipline┬╗. Aquichan 5, no. 1 (junio 16, 2009). Accedido mayo 16, 2022. https://aquichan.unisabana.edu.co/index.php/aquichan/article/view/57.