Poplin, D. E. (1972). Communities: A survey of theories and methods of research. New York: Macmillan.
शिकागो स्टाइल उद्धरणPoplin, Dennis E. Communities: A Survey of Theories and Methods of Research. New York: Macmillan, 1972.
एमएलए उद्धरणPoplin, Dennis E. Communities: A Survey of Theories and Methods of Research. New York: Macmillan, 1972.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.