APA Edition Citation

Brien, D. .. (2009). Penquin Yearbook: 2009. Penguin Books.

Chicago Edition Citation

Brien, Derek .O. Penquin Yearbook: 2009. New Delhi: Penguin Books, 2009.

MLA Edition Citation

Brien, Derek .O. Penquin Yearbook: 2009. Penguin Books, 2009.

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