APA (7th ed.) Citation

Chellas, B. F. (1988). Modal logic: An introduction (Reprinted.). Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Chellas, Brian F. Modal Logic: An Introduction. Reprinted. Cambridge [u.a.]: Cambridge Univ. Press, 1988.

MLA (9th ed.) Citation

Chellas, Brian F. Modal Logic: An Introduction. Reprinted. Cambridge Univ. Press, 1988.