APA (7th ed.) Citation

Matthews, Mallon, & Buchanan. (1993). The Guinness international who's who of sports. Guinness.

Chicago Style (17th ed.) Citation

Matthews, Mallon, and Buchanan. The Guinness International Who's Who of Sports. London: Guinness, 1993.

MLA (8th ed.) Citation

Matthews, et al. The Guinness International Who's Who of Sports. Guinness, 1993.