Cita APA (7a ed.)

Witt Hyde, W. D. (1961). The Five Great Philosophies of Life. Collier Books.

Cita Chicago Style (17a ed.)

Witt Hyde, William De. The Five Great Philosophies of Life. New York, Estados Unidos: Collier Books, 1961.

Cita MLA (9a ed.)

Witt Hyde, William De. The Five Great Philosophies of Life. Collier Books, 1961.