APA (7th ed.) Citation

Cohen, M. R., & Nagel, E. (1934). An introduction to logic and scientific method (Complete ed.). Routledge & Kegan Paul.

Chicago Style (17th ed.) Citation

Cohen, Morris R., and Ernest Nagel. An Introduction to Logic and Scientific Method. Complete ed. London: Routledge & Kegan Paul, 1934.

MLA (8th ed.) Citation

Cohen, Morris R., and Ernest Nagel. An Introduction to Logic and Scientific Method. Complete ed. Routledge & Kegan Paul, 1934.