Cita APA (7a ed.)

Watcyn-Jones, P., & Allsop, J. (1990). Test your prepositions. Penguin Books.

Cita Chicago Style (17a ed.)

Watcyn-Jones, Peter, y Jake Allsop. Test Your Prepositions. London: Penguin Books, 1990.

Cita MLA (9a ed.)

Watcyn-Jones, Peter, y Jake Allsop. Test Your Prepositions. Penguin Books, 1990.