APA (7th ed.) Citation

Allsop, J. (1988). Penguin english tests. Penguin Books.

Chicago Style (17th ed.) Citation

Allsop, Jake. Penguin English Tests. London: Penguin Books, 1988.

MLA (9th ed.) Citation

Allsop, Jake. Penguin English Tests. Penguin Books, 1988.

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