APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Ballin, W. H. Perfect Your English: The Easy Way. Hertfordshire, [Eng.]: Prentice-Hall International, 1990.

MLA (9th ed.) Citation

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

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