APA (7 वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, Gitterman, A., & Shulman, L. (2005). Mutual aid groups, vulnerable and resilient populations, and the life cycle (3rd ed.). Columbia University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, Alex Gitterman, और Lawrence Shulman. Mutual Aid Groups, Vulnerable and Resilient Populations, and the Life Cycle. 3rd ed. New York: Columbia University Press, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, et al. Mutual Aid Groups, Vulnerable and Resilient Populations, and the Life Cycle. 3rd ed. Columbia University Press, 2005.
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