Cita APA (7th ed.)

O'Brien Derek & Padmanabhan,Gautam Jayakumar,Navin. (2006). Penguin Landmark Quiz Book (NA.). Penguin Books.

Cita Chicago (17th ed.)

O'Brien Derek i Padmanabhan,Gautam Jayakumar,Navin. Penguin Landmark Quiz Book. NA. New Delhi: Penguin Books, 2006.

Cita MLA (9th ed.)

O'Brien Derek i Padmanabhan,Gautam Jayakumar,Navin. Penguin Landmark Quiz Book. NA. Penguin Books, 2006.