Kates, Aaron W., and Chris L. Coryn. “Use of Geographic Information Systems by American Evaluation Association Members in Their Professional Practice”. Journal of MultiDisciplinary Evaluation 17, no. 38 (January 14, 2021): 33–49. Accessed February 13, 2025. https://jmde.journals.publicknowledgeproject.org/index.php/jmde_1/article/view/683.