Cita APA (7th ed.)

Hornby, A. (1967). Oxford progressive english alternative: Course: Book D. Oxford University Pr.

Cita Chicago (17th ed.)

Hornby, A.S. Oxford Progressive English Alternative: Course: Book D. Oxford: Oxford University Pr, 1967.

Cita MLA (9th ed.)

Hornby, A.S. Oxford Progressive English Alternative: Course: Book D. Oxford University Pr, 1967.