O

Olson et al., 1963. Reuben A. Olson et al., The New American Standard New Testament. La Habra, California: Lockman Foundation, 1963.

Orme, 1824. William Orme, Bibliotheca Biblica: a Select List of Books on Sacred Literature, with Notices Biographical, Critical, and Bibliographical. London, 1824.

Orme, 1866. [William Orme], Memoir of the Controversy Respecting the Three Heavenly Witnesses, 1 John 5:7. London: James Miller, 1866. 213 pages. With additions by Ezra Abbot. Published under the pseudonym "Criticus."