APA (7th ed.) Citation

Hughes, G. E., & Cresswell, M. J. (1996). A new introduction to modal logic (1. publ.). Routledge.

Chicago Style (17th ed.) Citation

Hughes, Georges E., and Maxwell J. Cresswell. A New Introduction to Modal Logic. 1. publ. London [u.a.]: Routledge, 1996.

MLA (9th ed.) Citation

Hughes, Georges E., and Maxwell J. Cresswell. A New Introduction to Modal Logic. 1. publ. Routledge, 1996.