APA (7th ed.) Citation

Colson, C. (1991). Comfortably numb at Harvard. Christianity Today, 35(10), 88.

Chicago Style (17th ed.) Citation

Colson, C. "Comfortably Numb at Harvard." Christianity Today 35, no. 10 (1991): 88.

MLA (9th ed.) Citation

Colson, C. "Comfortably Numb at Harvard." Christianity Today, vol. 35, no. 10, 1991, p. 88.