Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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