APA (7th ed.) Citation

Gilkey, L., & Gilkey, L. B. (1990). Gilkey on Tillich. Crossroad.

Chicago Style (17th ed.) Citation

Gilkey, Langdon, and Langdon Brown Gilkey. Gilkey on Tillich. New York, NY: Crossroad, 1990.

MLA (8th ed.) Citation

Gilkey, Langdon, and Langdon Brown Gilkey. Gilkey on Tillich. Crossroad, 1990.

Warning: These citations may not always be 100% accurate.