Cita APA (7a ed.)

Delfgaauw, B. (1969). Twentieth-century philosophy. Magi Books.

Cita Chicago Style (17a ed.)

Delfgaauw, Bernard. Twentieth-century Philosophy. Albany, N.Y.: Magi Books, 1969.

Cita MLA (8a ed.)

Delfgaauw, Bernard. Twentieth-century Philosophy. Magi Books, 1969.