APA (7th ed.) Citation

Polkinghorne, J. C., & Welker, M. (2001). Introduction. Faith in the living God.

Chicago Style (17th ed.) Citation

Polkinghorne, John C., and Michael Welker. "Introduction." Faith in the Living God 2001.

MLA (9th ed.) Citation

Polkinghorne, John C., and Michael Welker. "Introduction." Faith in the Living God, 2001.

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