Cita APA (7a ed.)

Harper, W. L., Stalnaker, R., & Pearce, G. (1981). IFS: Conditionals, belief, decision, chance, and time. Reidel Publishing Company.

Cita Chicago Style (17a ed.)

Harper, William L., Robert Stalnaker, y Glenn Pearce. IFS: Conditionals, Belief, Decision, Chance, and Time. Dordrecht [etc.]: Reidel Publishing Company, 1981.

Cita MLA (9a ed.)

Harper, William L., et al. IFS: Conditionals, Belief, Decision, Chance, and Time. Reidel Publishing Company, 1981.