Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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