Gaya APA

Metcalf, D, R, C, D, B, J, K, K. (2009). The act of teaching (5th.ed.). Boston: MC. GRAW HILL.

Gaya MLA

Metcalf, Donald, R., Cruickshank;, Deborah, Bainer, Jenkins;, Kim, K.. "The act of teaching". 5th.ed. Boston: MC. GRAW HILL, 2009. Text.