Putnam, R. D. (2000). Bowling alone: The collapse and revival of American community. Simon and Schuster.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPutnam, Robert D. Bowling Alone: The Collapse and Revival of American Community. Simon and Schuster, 2000.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPutnam, Robert D. Bowling Alone: The Collapse and Revival of American Community. Simon and Schuster, 2000.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.