Cita APA (7th ed.)

Ubben, G. C., Hughes, L. W., & Norris, C. J. (2004). The principal: Creative leadership for excellence in schools (5th ed.). Pearson/Allyn and Bacon.

Cita Chicago (17th ed.)

Ubben, Gerald C., Larry W. Hughes, i Cynthia J. Norris. The Principal: Creative Leadership for Excellence in Schools. 5th ed. Boston: Pearson/Allyn and Bacon, 2004.

Cita MLA (9th ed.)

Ubben, Gerald C., et al. The Principal: Creative Leadership for Excellence in Schools. 5th ed. Pearson/Allyn and Bacon, 2004.