APA (7th ed.) Citation

WATCYN-JONES, P. (1986). Test your vocabulary book 1. Penguin Books.

Chicago Style (17th ed.) Citation

WATCYN-JONES, Peter. Test Your Vocabulary Book 1. Middlesex: Penguin Books, 1986.

MLA (9th ed.) Citation

WATCYN-JONES, Peter. Test Your Vocabulary Book 1. Penguin Books, 1986.

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