APA

Stumpf S. E., . (1979). Elements of philosophy: an introduction. New York: McGraw-Hill.

Chicago

Stumpf Samuel Enoch, . 1979. Elements of philosophy: an introduction. New York: McGraw-Hill.

Harvard

Stumpf S. E., . (1979). Elements of philosophy: an introduction. New York: McGraw-Hill.

MLA

Stumpf Samuel Enoch, . Elements of philosophy: an introduction. New York: McGraw-Hill. 1979.