Citazione Stile APA (7a Edizione)

Geisler, Norman L, & Feinberg, P. D. (1987). Introduction to Philosophy: A Christian Perspective (2nd ed.). Baker Academic.

Citazione stile Chigago Style (17a edizione)

Geisler, Norman L, e Paul D. Feinberg. Introduction to Philosophy: A Christian Perspective. 2nd ed. Grand Rapids, MI: Baker Academic, 1987.

Citatione MLA (9a ed.)

Geisler, et al. Introduction to Philosophy: A Christian Perspective. 2nd ed. Baker Academic, 1987.