APA Citation

Coppen, H. (1970). Simple audio-visual aids to foreign-language teaching. Oxford University Press.

Chicago Style Citation

Coppen, Helen. Simple Audio-visual Aids to Foreign-language Teaching. Oxford University Press, 1970.

MLA Citation

Coppen, Helen. Simple Audio-visual Aids to Foreign-language Teaching. Oxford University Press, 1970.

Warning: These citations may not always be 100% accurate.