Williams, R. B. (2008). 12 roles of facilitators for school change (2nd ed.). Corwin Press.
Cita Chicago (17th ed.)Williams, R. Bruce. 12 Roles of Facilitators for School Change. 2nd ed. Thousand Oaks, Calif: Corwin Press, 2008.
Cita MLA (9th ed.)Williams, R. Bruce. 12 Roles of Facilitators for School Change. 2nd ed. Corwin Press, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.