APA (7th ed.) Citation

Market Communications, inc, Encyclopaedia Britannica, inc, Meszaros, G., & Blair, J. (1979). Arctic animals. Encyclopedia Britannica.

Chicago Style (17th ed.) Citation

Market Communications, inc, inc Encyclopaedia Britannica, Gary Meszaros, and Jay Blair. Arctic Animals. Chicago: Encyclopedia Britannica, 1979.

MLA (9th ed.) Citation

Market Communications, inc, et al. Arctic Animals. Encyclopedia Britannica, 1979.