Earle, R. B., & Earle, R. B. (1975). PSI and political science: Using the personalized system of instruction to Teach American Politics. Washington, D.C.: American Political Science Association.
Chicago Style CitationEarle, Ralph B., and Ralph B. Earle. PSI and Political Science: Using the Personalized System of Instruction to Teach American Politics. Washington, D.C.: American Political Science Association, 1975.
MLA CitationEarle, Ralph B., and Ralph B. Earle. PSI and Political Science: Using the Personalized System of Instruction to Teach American Politics. Washington, D.C.: American Political Science Association, 1975.
Warning: These citations may not always be 100% accurate.