APA (7th ed.) Citation

Walton, J. B. (1991). Business profitability data--1991 (1991 ed.). Weybridge Publishing Co..

Chicago Style (17th ed.) Citation

Walton, John B. Business Profitability Data--1991. 1991 ed. Dallas, TX: Weybridge Publishing Co., 1991.

MLA (9th ed.) Citation

Walton, John B. Business Profitability Data--1991. 1991 ed. Weybridge Publishing Co., 1991.