Citazione Stile APA (7a Edizione)

Lee, W. R., & Coppen, H. (1968). Simple audio-visual aids to foreign-language teaching (2a. ed.). Oxford University.

Citazione stile Chigago Style (17a edizione)

Lee, W. R., e Helen Coppen. Simple Audio-visual Aids to Foreign-language Teaching. 2a. ed. Londres: Oxford University, 1968.

Citatione MLA (9a ed.)

Lee, W. R., e Helen Coppen. Simple Audio-visual Aids to Foreign-language Teaching. 2a. ed. Oxford University, 1968.