Gaya APA

hartwell, L, [, A., tamrin, R, H. (2010). Supervision concepts and skill building Ed.7 . New York: Mc Graw Hill.

Gaya MLA

hartwell, Leland, [et, Al.]., tamrin, Robert, H.. "Supervision concepts and skill building Ed.7". New York: Mc Graw Hill, 2010. Text.