APA Edition Citation

O`Brien,Derek. (2009). Penguin Year Book 2009. Penguin Books.

Chicago Edition Citation

O`Brien,Derek. Penguin Year Book 2009. New Delhi: Penguin Books, 2009.

MLA Edition Citation

O`Brien,Derek. Penguin Year Book 2009. Penguin Books, 2009.

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