Williams, R. B. (2008). 12 roles of facilitators for school change (2nd ed.). Corwin Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWilliams, R. Bruce. 12 Roles of Facilitators for School Change. 2nd ed. Thousand Oaks, Calif: Corwin Press, 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWilliams, R. Bruce. 12 Roles of Facilitators for School Change. 2nd ed. Corwin Press, 2008.
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