Cita APA (7a ed.)

Strange, D., & Holderness, J. (1995). Chatterbox: Activity book 4.

Cita Chicago Style (17a ed.)

Strange, Derek, y J.A Holderness. Chatterbox: Activity Book 4. Oxford, 1995.

Cita MLA (9a ed.)

Strange, Derek, y J.A Holderness. Chatterbox: Activity Book 4. 1995.