APA (7th ed.) Citation

Ignatius, o. L., & Young, W. J. (1959). Letters of St. Ignatius of Loyola. Loyola University Press.

Chicago Style (17th ed.) Citation

Ignatius, of Loyola, and William John Young. Letters of St. Ignatius of Loyola. Chicago: Loyola University Press, 1959.

MLA (8th ed.) Citation

Ignatius, of Loyola, and William John Young. Letters of St. Ignatius of Loyola. Loyola University Press, 1959.