APA (7th ed.) Citation

Lewis, D. K. (1986). On the plurality of worlds. Blackwell Publishers.

Chicago Style (17th ed.) Citation

Lewis, David K. On the Plurality of Worlds. Malden, Massachusetts: Blackwell Publishers, 1986.

MLA (8th ed.) Citation

Lewis, David K. On the Plurality of Worlds. Blackwell Publishers, 1986.