Cita APA (7a ed.)

Gardner, B., & Gardner, F. (2000). Classroom english (First edition.). Oxford University Press.

Cita Chicago Style (17a ed.)

Gardner, Bryan, y Felicity Gardner. Classroom English. First edition. Oxford: Oxford University Press, 2000.

Cita MLA (9a ed.)

Gardner, Bryan, y Felicity Gardner. Classroom English. First edition. Oxford University Press, 2000.