APA (7th ed.) Citation

Allen, F., & Young, D. C. (1971). Insight into English. J. Wiley & Sons Australasia.

Chicago Style (17th ed.) Citation

Allen, F., and D. C. Young. Insight into English. Sydney, New York: J. Wiley & Sons Australasia, 1971.

MLA (8th ed.) Citation

Allen, F., and D. C. Young. Insight into English. J. Wiley & Sons Australasia, 1971.