Lancaster, O. E. (1974). Effective teaching and learning. Gordon and Breach.
शिकागो स्टाइल उद्धरणLancaster, Otis Ewing. Effective Teaching and Learning. New York: Gordon and Breach, 1974.
एमएलए उद्धरणLancaster, Otis Ewing. Effective Teaching and Learning. Gordon and Breach, 1974.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.