APA (7th ed.) Zitazioa

Mueller, D. L. (1972). Karl Barth. Word Books.

Chicago Style (17th ed.) Zitazioa

Mueller, David L. Karl Barth. Waco, Tex.: Word Books, 1972.

MLA (9th ed.) Zitazioa

Mueller, David L. Karl Barth. Word Books, 1972.