APA (7th ed.) Citation

Gardiner, H. C., & Thomas, K. (1989). The imitation of Christ. Image Books.

Chicago Style (17th ed.) Citation

Gardiner, Harold Charles, and Kempis Thomas. The Imitation of Christ. Garden City, N.Y: Image Books, 1989.

MLA (9th ed.) Citation

Gardiner, Harold Charles, and Kempis Thomas. The Imitation of Christ. Image Books, 1989.