APA (7th ed.) Citation

Cohen & Nagel. (1934). An introduction to logic and scientific method. Harcourt, Brace and compan.

Chicago Style (17th ed.) Citation

Cohen and Nagel. An Introduction to Logic and Scientific Method. New York: Harcourt, Brace and compan, 1934.

MLA (8th ed.) Citation

Cohen and Nagel. An Introduction to Logic and Scientific Method. Harcourt, Brace and compan, 1934.