Cita APA (7th ed.)

Certo, S. C. (2000). Supervision: Concepts and skill building (3rd ed.). Irwin.

Cita Chicago (17th ed.)

Certo, Samuel C. Supervision: Concepts and Skill Building. 3rd ed. Illinois: Irwin, 2000.

Cita MLA (9th ed.)

Certo, Samuel C. Supervision: Concepts and Skill Building. 3rd ed. Irwin, 2000.