APA (7th ed.) Citation

O'Malley, J. W. (2008). What happened at Vatican II. Belknap Press of Harvard Univ. Press.

Chicago Style (17th ed.) Citation

O'Malley, John W. What Happened at Vatican II. Cambridge, Mass. [u.a.]: Belknap Press of Harvard Univ. Press, 2008.

MLA (8th ed.) Citation

O'Malley, John W. What Happened at Vatican II. Belknap Press of Harvard Univ. Press, 2008.

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