APA (7th ed.) Citation

Chellas, B. F. (1990). Modal logic: An introduction (Reprinted.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Chellas, Brian F. Modal Logic: An Introduction. Reprinted. Cambridge ; New York ; Port Chester ; Melbourne ; Sydney: Cambridge University Press, 1990.

MLA (9th ed.) Citation

Chellas, Brian F. Modal Logic: An Introduction. Reprinted. Cambridge University Press, 1990.