Littell, M. (1994). Gateways to mathematical investigations (Teacher's ed.). McDougal,Littell & Co..
Chicagoスタイル(17版)引用形式Littell, McDougal. Gateways to Mathematical Investigations. Teacher's ed. Dallas: McDougal,Littell & Co., 1994.
MLA(9版)引用形式Littell, McDougal. Gateways to Mathematical Investigations. Teacher's ed. McDougal,Littell & Co., 1994.
警告: この引用は必ずしも正確ではありません.