APA (7th ed.) Citation
Watcyn-Jones, P. (1985). Test Your Vocabulary-Book 1. Penguin English.
Chicago Style (17th ed.) Citation
Watcyn-Jones, Peter. Test Your Vocabulary-Book 1. London: Penguin English, 1985.
MLA (9th ed.) Citation
Watcyn-Jones, Peter. Test Your Vocabulary-Book 1. Penguin English, 1985.
Warning: These citations may not always be 100% accurate.