Carden, Fred, and Marvin C. Alkin. “Evaluation Roots: An International Perspective”. Journal of MultiDisciplinary Evaluation 8, no. 17 (January 24, 2012): 102–118. Accessed May 4, 2026. https://jmde.journals.publicknowledgeproject.org/index.php/jmde_1/article/view/348.