Corey, M. S., Corey, G., & Corey, C. (2018). Groups: Process and practice (Tenth edition.). Cengage Learning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCorey, Marianne Schneider, Gerald Corey, और Cindy Corey. Groups: Process and Practice. Tenth edition. Boston, MA, USA: Cengage Learning, 2018.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCorey, Marianne Schneider, et al. Groups: Process and Practice. Tenth edition. Cengage Learning, 2018.
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