Cita APA (7a ed.)

Certo, S. C. (2008). Supervision: Concepts and skill-building (6th ed.). McGraw-Hill/Irwin, a business unit of The McGraw-Hill Companies, Inc..

Cita Chicago Style (17a ed.)

Certo, Samuel C. Supervision: Concepts and Skill-building. 6th ed. Boston: McGraw-Hill/Irwin, a business unit of The McGraw-Hill Companies, Inc., 2008.

Cita MLA (9a ed.)

Certo, Samuel C. Supervision: Concepts and Skill-building. 6th ed. McGraw-Hill/Irwin, a business unit of The McGraw-Hill Companies, Inc., 2008.