APA (7th ed.) Citation

Watcyn-Jones, P., & Thomson, R. (1990). Test your english idioms. Penguin Books.

Chicago Style (17th ed.) Citation

Watcyn-Jones, Peter, and Ross Thomson. Test Your English Idioms. London: Penguin Books, 1990.

MLA (9th ed.) Citation

Watcyn-Jones, Peter, and Ross Thomson. Test Your English Idioms. Penguin Books, 1990.

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