Saaty, T. L. (1986). The four color problem: Assaults and conquest. Dover Publications.
シカゴスタイル引用形Saaty, Thomas L. The Four Color Problem: Assaults and Conquest. New York: Dover Publications, 1986.
MLA引用形式Saaty, Thomas L. The Four Color Problem: Assaults and Conquest. Dover Publications, 1986.
警告: この引用は必ずしも正確ではありません.