APA (7th ed.) Citation

Roth, J. K., & Sontag, F. (1988). The questions of philosophy. Wadsworth.

Chicago Style (17th ed.) Citation

Roth, John K., and Frederick Sontag. The Questions of Philosophy. Belmont, Calif: Wadsworth, 1988.

MLA (9th ed.) Citation

Roth, John K., and Frederick Sontag. The Questions of Philosophy. Wadsworth, 1988.