APA (7th ed.) Citation

Yates, R. C. (1971). The trisection problem. National Council of Teachers of Mathematics.

Chicago Style (17th ed.) Citation

Yates, Robert C. The Trisection Problem. [Washington, D.C.]: National Council of Teachers of Mathematics, 1971.

MLA (9th ed.) Citation

Yates, Robert C. The Trisection Problem. National Council of Teachers of Mathematics, 1971.

Warning: These citations may not always be 100% accurate.