Certo, S. C. (2008). Supervision: Concept and skill building (6th ed.). McGraw-Hill.
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Chicago-čujuhus (17. p.)
Certo, Samuel C. Supervision: Concept and Skill Building. 6th ed. New York, NY: McGraw-Hill, 2008.
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MLA-čujuhus (9. p.)
Certo, Samuel C. Supervision: Concept and Skill Building. 6th ed. McGraw-Hill, 2008.
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