Dyfyniad APA

Hughes, G. E., & Cresswell, M. J. (1996). A new introduction to modal logic. London ; New York.

Dyfyniad Arddull Chicago

Hughes, G. E., and M. J. Cresswell. A New Introduction to Modal Logic. London ; New York, 1996.

Dyfyniad MLA

Hughes, G. E., and M. J. Cresswell. A New Introduction to Modal Logic. London ; New York, 1996.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.