APA (7th ed.) Citation

Ralston Purina Company & Training Corporation. (1987). The practice of profit. [Ralston Purina Co.].

Chicago Style (17th ed.) Citation

Ralston Purina Company and Training Corporation. The Practice of Profit. [St. Louis]: [Ralston Purina Co.], 1987.

MLA (9th ed.) Citation

Ralston Purina Company and Training Corporation. The Practice of Profit. [Ralston Purina Co.], 1987.