Charles, R. I. (1991). Problem-solving experiences in geometry: Teacher sourcebook. Addison-Wesley.
Chicagoスタイル(17版)引用形式Charles, Randall I. Problem-solving Experiences in Geometry: Teacher Sourcebook. Menlo Park, CA: Addison-Wesley, 1991.
MLA(9版)引用形式Charles, Randall I. Problem-solving Experiences in Geometry: Teacher Sourcebook. Addison-Wesley, 1991.
警告: この引用は必ずしも正確ではありません.