Cita APA (7th ed.)

Cunningham S. Sarah & Bowler B. Bill. (2002). New Headway Pronunciation Course. Intermediate. Oxford, Oxford University Press, 2002.

Cita Chicago (17th ed.)

Cunningham S. Sarah i Bowler B. Bill. New Headway Pronunciation Course. Intermediate. Oxford, Oxford University Press, 2002, 2002.

Cita MLA (9th ed.)

Cunningham S. Sarah i Bowler B. Bill. New Headway Pronunciation Course. Intermediate. Oxford, Oxford University Press, 2002, 2002.