APA (7 वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, Cohen, L. E., & Waite-Stupiansky, S. (2012). Play: A polyphony of research, theories, and issues. University Press of America.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, Lynn E. Cohen, और Sandra Waite-Stupiansky. Play: A Polyphony of Research, Theories, and Issues. Lanham: University Press of America, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, et al. Play: A Polyphony of Research, Theories, and Issues. University Press of America, 2012.
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