Tohutoro APA (7th ed.)
Certo, S. C. (2003). Supervision: Concepts and skill building (4th ed.). Irwin.
Tohutoru Kātū Chicago (17th ed.)
Certo, Samuel C. Supervision: Concepts and Skill Building. 4th ed. Illinois: Irwin, 2003.
Tohutoro MLA (9th ed.)
Certo, Samuel C. Supervision: Concepts and Skill Building. 4th ed. Irwin, 2003.
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