MLA

Northrop, F. S. C. The Logic of the Sciences and the Humanities. New York (N.Y.): Macmillan, 1947.

APA

Northrop, F. S. C. (1947). The logic of the sciences and the humanities. New York (N.Y.): Macmillan.

Chicago

Northrop, F. S. C. The Logic of the Sciences and the Humanities. New York (N.Y.): Macmillan, 1947.