Cita APA (7a ed.)

Lee, W., & Coppen, H. (1968). Simple audio-visual aids to foreign-lenguage teching (2nd edition.). Oxford university press.

Cita Chicago Style (17a ed.)

Lee, W.R, y Helen Coppen. Simple Audio-visual Aids to Foreign-lenguage Teching. 2nd edition. London: Oxford university press, 1968.

Cita MLA (8a ed.)

Lee, W.R, y Helen Coppen. Simple Audio-visual Aids to Foreign-lenguage Teching. 2nd edition. Oxford university press, 1968.