Cita APA (7a ed.)

Walker, M. (1980). Yes! English for Children (2a. ed.). Addison Wesley Publishing Company.

Cita Chicago Style (17a ed.)

Walker, Michael. Yes! English for Children. 2a. ed. EEUU: Addison Wesley Publishing Company, 1980.

Cita MLA (9a ed.)

Walker, Michael. Yes! English for Children. 2a. ed. Addison Wesley Publishing Company, 1980.