APA-referens (7:e uppl.)

Certo, S. C. (1994). Supervision: Quality and diversity through leadership. Irwin.

Chicago-referens (17:e uppl.)

Certo, Samuel C. Supervision: Quality and Diversity Through Leadership. Burr Ridge, Ill: Irwin, 1994.

MLA-referens (9:e uppl.)

Certo, Samuel C. Supervision: Quality and Diversity Through Leadership. Irwin, 1994.