Saaty, T. L. (1986). The four color problem: Assaults and conquest. Dover Publications.
Chicago Edition CitationSaaty, Thomas L. The Four Color Problem: Assaults and Conquest. New York: Dover Publications, 1986.
MLA Edition CitationSaaty, Thomas L. The Four Color Problem: Assaults and Conquest. Dover Publications, 1986.
Warning: These citations may not always be 100% accurate.