Cita APA (7a ed.)

Chagrov, A., & Zakharyaschev, M. (1997). Modal logic. Clarendon.

Cita Chicago Style (17a ed.)

Chagrov, Alexander, y Michael Zakharyaschev. Modal Logic. Oxford: Clarendon, 1997.

Cita MLA (8a ed.)

Chagrov, Alexander, y Michael Zakharyaschev. Modal Logic. Clarendon, 1997.