APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Delfgaauw, Bernardus Maria Ignatius. Twentieth-century Philosophy. Albany, N. Y: Magi Books, 1969.

MLA (9th ed.) Citation

Delfgaauw, Bernardus Maria Ignatius. Twentieth-century Philosophy. Magi Books, 1969.