Barkley, E. F., Major, C. H., & Cross, K. P. (2014). Collaborative learning techniques: A handbook for college faculty (Second edition.). John Wiley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarkley, Elizabeth F., Claire Howell Major, और K. Patricia Cross. Collaborative Learning Techniques: A Handbook for College Faculty. Second edition. USA: John Wiley, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBarkley, Elizabeth F., et al. Collaborative Learning Techniques: A Handbook for College Faculty. Second edition. John Wiley, 2014.
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