APA (7th ed.) Citation

Cohen, M. R., & Cohen, M. R. (1972). An introduction to logic and scientific method. Allied Publishers.

Chicago Style (17th ed.) Citation

Cohen, Morris R., and Morris R.;Nagel Cohen. An Introduction to Logic and Scientific Method. Allied Publishers, 1972.

MLA (9th ed.) Citation

Cohen, Morris R., and Morris R.;Nagel Cohen. An Introduction to Logic and Scientific Method. Allied Publishers, 1972.