APA (7th ed.) Citation

Nelson, S., & Keim, W. G. (1940). Price behavior and business policy. [publisher not identified].

Chicago Style (17th ed.) Citation

Nelson, Saul, and Walter G. Keim. Price Behavior and Business Policy. [Washington]: [publisher not identified], 1940.

MLA (8th ed.) Citation

Nelson, Saul, and Walter G. Keim. Price Behavior and Business Policy. [publisher not identified], 1940.