Cita APA (7a ed.)

Hornby, A., & Mackin, R. (1966). Oxford progressive english alternative course. Book C: Teacher's handbook. Oxford University.

Cita Chicago Style (17a ed.)

Hornby, A.S, y R. Mackin. Oxford Progressive English Alternative Course. Book C: Teacher's Handbook. London: Oxford University, 1966.

Cita MLA (8a ed.)

Hornby, A.S, y R. Mackin. Oxford Progressive English Alternative Course. Book C: Teacher's Handbook. Oxford University, 1966.