Leonard, E. C. (2010). Supervision: Concepts and practices of management (11th ed.). South-Western, Cengage.
Chicago (17e ed.) BronvermeldingLeonard, Edwin C. Supervision: Concepts and Practices of Management. 11th ed. Mason, OH: South-Western, Cengage, 2010.
MLA (9e ed.) BronvermeldingLeonard, Edwin C. Supervision: Concepts and Practices of Management. 11th ed. South-Western, Cengage, 2010.
Let op: Deze citaties zijn niet altijd 100% accuraat.