APA (7th ed.) Citation

Green, Hawksley, Penny, Pope, & Stidworthy. (2000). QUESTION and answer encyclopedia: The natural world. Parragon.

Chicago Style (17th ed.) Citation

Green, Hawksley, Penny, Pope, and Stidworthy. QUESTION and Answer Encyclopedia: The Natural World. Bath: Parragon, 2000.

MLA (9th ed.) Citation

Green, et al. QUESTION and Answer Encyclopedia: The Natural World. Parragon, 2000.