APA (7th ed.) Citation

Norman, J., & Sylvan, R. (1989). Directions in relevant logic. Kluwer Academic Publishers.

Chicago Style (17th ed.) Citation

Norman, Jean, and Richard Sylvan. Directions in Relevant Logic. Dordrecht [etc.]: Kluwer Academic Publishers, 1989.

MLA (9th ed.) Citation

Norman, Jean, and Richard Sylvan. Directions in Relevant Logic. Kluwer Academic Publishers, 1989.