Cita APA (7a ed.)

Ward, A., & Holderness, J. (1994). Chatterbox: Teacher's book 3.

Cita Chicago Style (17a ed.)

Ward, Ann, y J.A Holderness. Chatterbox: Teacher's Book 3. Oxford, 1994.

Cita MLA (9a ed.)

Ward, Ann, y J.A Holderness. Chatterbox: Teacher's Book 3. 1994.