University Associates Publishers, Pfeiffer, J. W., & Jones, J. E. The Annual handbook for group facilitators. University Associates.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUniversity Associates Publishers, J. William Pfeiffer, और John E. Jones. The Annual Handbook for Group Facilitators. La Jolla, Calif: University Associates.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUniversity Associates Publishers, et al. The Annual Handbook for Group Facilitators. University Associates.
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