APA-Zitierstil (7. Ausg.)

Hughes, G. E., & Cresswell, M. J. (1972). An introduction to modal logic (1. publ. as University paperback.). Methuen.

Chicago-Zitierstil (17. Ausg.)

Hughes, George E., und Maxwell J. Cresswell. An Introduction to Modal Logic. 1. publ. as University paperback. London: Methuen, 1972.

MLA-Zitierstil (9. Ausg.)

Hughes, George E., und Maxwell J. Cresswell. An Introduction to Modal Logic. 1. publ. as University paperback. Methuen, 1972.