APA (7th ed.) Citation

Allsop, J. (1991). Penguin English tests. Gelatik.

Chicago Style (17th ed.) Citation

Allsop, Jake. Penguin English Tests. Gelatik, 1991.

MLA (8th ed.) Citation

Allsop, Jake. Penguin English Tests. Gelatik, 1991.

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