Certo, S. C. (1994). Supervision: Quality and diversity through leadership. Irwin.
Citazione stile Chigago Style (17a edizione)Certo, Samuel C. Supervision: Quality and Diversity Through Leadership. Burr Ridge, Ill: Irwin, 1994.
Citatione MLA (9a ed.)Certo, Samuel C. Supervision: Quality and Diversity Through Leadership. Irwin, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.