APA (7th ed.) Citation

Keller, W. P. (1970). A shepherd look at psalms 23. Harper paperbacks.

Chicago Style (17th ed.) Citation

Keller, W. Phillip. A Shepherd Look at Psalms 23. New York: Harper paperbacks, 1970.

MLA (9th ed.) Citation

Keller, W. Phillip. A Shepherd Look at Psalms 23. Harper paperbacks, 1970.