(1996). A new introduction to modal logic / G.E. Hughes and M.J. Cresswell.
Chicago Style (17th ed.) CitationA New Introduction to Modal Logic / G.E. Hughes and M.J. Cresswell. 1996.
MLA (9th ed.) CitationA New Introduction to Modal Logic / G.E. Hughes and M.J. Cresswell. 1996.
Warning: These citations may not always be 100% accurate.