APA (7th ed.) Citation

Allen. (2006). The Penguin office dictionary. Penguin Books.

Chicago Style (17th ed.) Citation

Allen. The Penguin Office Dictionary. London: Penguin Books, 2006.

MLA (8th ed.) Citation

Allen. The Penguin Office Dictionary. Penguin Books, 2006.

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