Cita APA (7a ed.)

Lemmon, E. J., & Scott, D. S. (1977). An introduction to modal logic. Basil Blackwell.

Cita Chicago Style (17a ed.)

Lemmon, E. J., y Dana S. Scott. An Introduction to Modal Logic. Oxford: Basil Blackwell, 1977.

Cita MLA (9a ed.)

Lemmon, E. J., y Dana S. Scott. An Introduction to Modal Logic. Basil Blackwell, 1977.