APA (7th ed.) Citation

O`Brien Derek. (2008). Derek`s Picks: The Best Quizzes of Derek O`Brien (NA.). Penguein Books.

Chicago Style (17th ed.) Citation

O`Brien Derek. Derek`s Picks: The Best Quizzes of Derek O`Brien. NA. New Delhi: Penguein Books, 2008.

MLA (9th ed.) Citation

O`Brien Derek. Derek`s Picks: The Best Quizzes of Derek O`Brien. NA. Penguein Books, 2008.

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