APA (7th ed.) Citation

University of Western Ontario Philosophy Colloquium, Canada Council, University College, University of Western Ontario, & Margolis, J. (1969). Fact and existence: Proceedings. Blackwell.

Chicago Style (17th ed.) Citation

University of Western Ontario Philosophy Colloquium, Canada Council, University of Western Ontario University College, and Joseph Margolis. Fact and Existence: Proceedings. Oxford: Blackwell, 1969.

MLA (8th ed.) Citation

University of Western Ontario Philosophy Colloquium, et al. Fact and Existence: Proceedings. Blackwell, 1969.