Bauer, H. H., & Snizek, W. E. (1989). Encouraging students in large classes to ask questions: Some promising results from classes in chemistry and sociology (pdf). Teaching Sociology, 17 (3), 337-340.

Cooper, M. M. (1995, February). Cooperative learning: An approach for large enrollment courses (html full text).  Journal of Chemical Education, 72 (2), 162-164.

Early Career Geoscience Faculty: Teaching, Research, and Managing Your Career (website).   Teaching Large Classes - http://serc.carleton.edu/NAGTWorkshops/earlycareer/teaching/LargeClasses.html.   The resources in this website can help you keep your students actively engaged, and minimize the time you spend grading, effectively and efficiently. 

Stanley, C. A., & Porter, M. E. (2002). Engaging LARGE Classes: Strategies and Techniques for College Faculty. San Francisco: Jossey-Bass.