Παραπομπή APA

Cohen, M. R. (1959). Reason and nature: An essay on the meaning of scientific method (2nd ed.).

Παραπομπή Chicago Style

Cohen, Morris R. Reason and Nature: An Essay on the Meaning of Scientific Method. 2nd ed. 1959.

Παραπομπή MLA

Cohen, Morris R. Reason and Nature: An Essay on the Meaning of Scientific Method. 2nd ed. 1959.