Hughes, G. E., & Cresswell, M. J. (1996). A new introduction to modal logic. London ; New York.
Chicago Style CitationHughes, G. E., i M. J. Cresswell. A New Introduction to Modal Logic. London ; New York, 1996.
Cita MLAHughes, G. E., i M. J. Cresswell. A New Introduction to Modal Logic. London ; New York, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.