American Psychological Association
Hughes, G E, & Cresswell, M J ( 2001 ). New Introduction to Modal Logic ( 00 ed. ). Roytledge & Kegan Paul.
Modern Language Association
Hughes, G E and Cresswell, M J. New Introduction to Modal Logic . Roytledge & Kegan Paul. 2001
Chicago Citation
Hughes, G E and Cresswell, M J. New Introduction to Modal Logic . 00 .London
: Roytledge & Kegan Paul, 2001.
American Medical Association
Hughes, G E and Cresswell, M J. New Introduction to Modal Logic . Roytledge & Kegan Paul; 2001.
