APA citiranje

Posen, M. (2003). Question and Answer Encyclopedia: The natural World. Parragon Publishing.

Chicago Style (17th ed.) Citation

Posen, Michael. Question and Answer Encyclopedia: The Natural World. Bath Bai IHE, Inglaterra: Parragon Publishing, 2003.

MLA citiranje

Posen, Michael. Question and Answer Encyclopedia: The Natural World. Parragon Publishing, 2003.