APA (7th ed.) Citation

Dun and Bradstreet, inc., New York, & Foulke, R. A. (1957). Twenty-five years of the 14 important ratios. Dun & Bradstreet.

Chicago Style (17th ed.) Citation

Dun and Bradstreet, inc., New York, and Roy Anderson Foulke. Twenty-five Years of the 14 Important Ratios. [Place of publication not identified]: Dun & Bradstreet, 1957.

MLA (9th ed.) Citation

Dun and Bradstreet, inc., New York, and Roy Anderson Foulke. Twenty-five Years of the 14 Important Ratios. Dun & Bradstreet, 1957.