B. Leung, Cynthia, W. Steve Lang, and Steven C. Schaller. “Rasch Modeling to Drive Instruction of Content Area Concepts and Vocabulary: An Example from Secondary Economics Instruction With Special Needs Students”. International Journal of Learning, Teaching and Educational Research 16, no. 12 (December 30, 2017): 70–86. Accessed April 20, 2026. http://www.ijlter.net/index.php/ijlter/article/view/764.