Powers, R. B. (1972). Personalized Systems of Instruction: How Evaluate?
Chicago Style (17th ed.) CitationPowers, Richard B. Personalized Systems of Instruction: How Evaluate? 1972.
MLA (9th ed.) CitationPowers, Richard B. Personalized Systems of Instruction: How Evaluate? 1972.
Warning: These citations may not always be 100% accurate.