APA (7th ed.) Citation

Oberman, H. A., Callahan, D., & O'Hanlon, D. (1961). Christianity divided: Protestant and Roman Catholic Theological Issues. Sheed and Ward.

Chicago Style (17th ed.) Citation

Oberman, Heiko Augustinus, Daniel Callahan, and Daniel O'Hanlon. Christianity Divided: Protestant and Roman Catholic Theological Issues. New York: Sheed and Ward, 1961.

MLA (9th ed.) Citation

Oberman, Heiko Augustinus, et al. Christianity Divided: Protestant and Roman Catholic Theological Issues. Sheed and Ward, 1961.