APA (7th ed.) Citation

Marmion, C. (1962). The English letters of Abbot Marmion, 1858-1923. Helicon Press.

Chicago Style (17th ed.) Citation

Marmion, Columba. The English Letters of Abbot Marmion, 1858-1923. Baltimore: Helicon Press, 1962.

MLA (8th ed.) Citation

Marmion, Columba. The English Letters of Abbot Marmion, 1858-1923. Helicon Press, 1962.