APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.