Gaya APA

III, W, A, G., Gerrard, B, A. (1977). Learning By Doing : Developing Teaching Skills . Massachusetts: Addison-Wesley Publishig Compay.

Gaya MLA

III, William, A., Gray., Gerrard, Brian, A.. "Learning By Doing : Developing Teaching Skills". Massachusetts: Addison-Wesley Publishig Compay, 1977. Text.