APA (7th ed.) Citation

Thomas, à. K. (1900). Of the imitation of Christ: Four books. Oxford University Press.

Chicago Style (17th ed.) Citation

Thomas, à Kempis. Of the Imitation of Christ: Four Books. London ; New York: Oxford University Press, 1900.

MLA (8th ed.) Citation

Thomas, à Kempis. Of the Imitation of Christ: Four Books. Oxford University Press, 1900.