Dyfyniad APA

School Mathematics Study Group & Schaaf, W. L. (1967). Nature and history of Pi. Leland Stanford Junior University.

Dyfyniad Arddull Chicago

School Mathematics Study Group and William L. Schaaf. Nature and History of Pi. Stanford, CA: Leland Stanford Junior University, 1967.

Dyfyniad MLA

School Mathematics Study Group and William L. Schaaf. Nature and History of Pi. Leland Stanford Junior University, 1967.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.