MLA

Sarton, George. The History of Science and the New Humanism. New York (N.Y.): Holt, 1931.

APA

Sarton, G. (1931). The history of science and the new humanism. New York (N.Y.): Holt.

Chicago

Sarton, George, The History of Science and the New Humanism. New York (N.Y.): Holt, 1931.