APA (7th ed.) Citation

Ballin, W. H. (1990). Perfect your English: The easy way. Prentice Hall.

Chicago Style (17th ed.) Citation

Ballin, W. H. Perfect Your English: The Easy Way. Englewood Cliffs, N.J: Prentice Hall, 1990.

MLA (9th ed.) Citation

Ballin, W. H. Perfect Your English: The Easy Way. Prentice Hall, 1990.