APA (7th ed.) Citation

Lee, W. R., & Coppen, H. E. (1975). Simple audio-visual aids to foreign-language teaching (2nd ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Lee, William Rowland, and Helen Elizabeth Coppen. Simple Audio-visual Aids to Foreign-language Teaching. 2nd ed. London: Oxford University Press, 1975.

MLA (9th ed.) Citation

Lee, William Rowland, and Helen Elizabeth Coppen. Simple Audio-visual Aids to Foreign-language Teaching. 2nd ed. Oxford University Press, 1975.

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