Cita APA (7a ed.)

Watcyn-Jones, P., & Nordqvist, S. (1996). Start testing your vocabulary. Penguin Books.

Cita Chicago Style (17a ed.)

Watcyn-Jones, Peter, y Sven Nordqvist. Start Testing Your Vocabulary. London: Penguin Books, 1996.

Cita MLA (9a ed.)

Watcyn-Jones, Peter, y Sven Nordqvist. Start Testing Your Vocabulary. Penguin Books, 1996.