Padmanabhan,Gautam, & Jayakumar Navin. (2004). The Penguin-Landmark Quiz Book (NA.). Penguin Book.
Dyfyniad Arddull ChicagoPadmanabhan,Gautam, and Jayakumar Navin. The Penguin-Landmark Quiz Book. NA. New Delhi: Penguin Book, 2004.
Dyfyniad MLAPadmanabhan,Gautam, and Jayakumar Navin. The Penguin-Landmark Quiz Book. NA. Penguin Book, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.