Certo, S. C. (1994). Supervision: Quality and diversity through leadership. Irwin.
Tohutoru Kātū Chicago (17th ed.)Certo, Samuel C. Supervision: Quality and Diversity Through Leadership. Illinois: Irwin, 1994.
Tohutoro MLA (9th ed.)Certo, Samuel C. Supervision: Quality and Diversity Through Leadership. Irwin, 1994.
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