APA (7th ed.) Citation

(1970). 25,000 leading U.S. corporations. [Year, inc.].

Chicago Style (17th ed.) Citation

25,000 Leading U.S. Corporations. [New York]: [Year, inc.], 1970.

MLA (9th ed.) Citation

25,000 Leading U.S. Corporations. [Year, inc.], 1970.