School Mathematics Study Group & Schaaf, W. L. (1967). Nature and history of Pi. Leland Stanford Junior University.
Chicagoスタイル(17版)引用形式School Mathematics Study Group , William L. Schaaf. Nature and History of Pi. Stanford, CA: Leland Stanford Junior University, 1967.
MLA(9版)引用形式School Mathematics Study Group , William L. Schaaf. Nature and History of Pi. Leland Stanford Junior University, 1967.
警告: この引用は必ずしも正確ではありません.