APA

Cohen M. R., . (1934). An introduction to logic and scientific method. New York: Harcourt Brace.

Chicago

Cohen Morris Raphael, . 1934. An introduction to logic and scientific method. New York: Harcourt Brace.

Harvard

Cohen M. R., . (1934). An introduction to logic and scientific method. New York: Harcourt Brace.

MLA

Cohen Morris Raphael, . An introduction to logic and scientific method. New York: Harcourt Brace. 1934.