Simon, R. A., M. W. Aulls, H. Dedic, K. Hubbard, and N. Hall. “Exploring Student Persistence in STEM Programs: A Motivational Model”. Canadian Journal of Education/Revue Canadienne De l’éducation, vol. 38, no. 1, Feb. 2015, pp. 1-27, https://journals.sfu.ca/cje/index.php/cje-rce/article/view/1729.