APA Style

Certo, S, C., Biernatt, J, E. (2008). Supervision concepts & skill-building (6th. ed.). New York: McGraw-Hill/Irwin.

MLA Style

Certo, Samuel, C.., Biernatt, John, E.. "Supervision concepts & skill-building". 6th. ed. New York: McGraw-Hill/Irwin, 2008. Text.