APA (7th ed.) Citation
Keller, W. P. (1993). Strength of soul: The sacred use of time. Kregel Publications.
Chicago Style (17th ed.) Citation
Keller, W. Phillip. Strength of Soul: The Sacred Use of Time. Grand Rapids, MI: Kregel Publications, 1993.
MLA (9th ed.) Citation
Keller, W. Phillip. Strength of Soul: The Sacred Use of Time. Kregel Publications, 1993.
Warning: These citations may not always be 100% accurate.