APA (7th ed.) Citation

Graham, H. G. (1914). Purgatory. Paulist Press.

Chicago Style (17th ed.) Citation

Graham, Henry Grey. Purgatory. New York: Paulist Press, 1914.

MLA (8th ed.) Citation

Graham, Henry Grey. Purgatory. Paulist Press, 1914.

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