APA (7th ed.) Citation

Newton, Nagel, & Travers. (1997). U.X.L Encyclopedia of science Vol 1-9. U.X.L. An Imprint of Gale.

Chicago Style (17th ed.) Citation

Newton, Nagel, and Travers. U.X.L Encyclopedia of Science Vol 1-9. London: U.X.L. An Imprint of Gale, 1997.

MLA (8th ed.) Citation

Newton, et al. U.X.L Encyclopedia of Science Vol 1-9. U.X.L. An Imprint of Gale, 1997.