APA (7th ed.) Citation

Dudley, U. (1994). The trisectors. The Mathematical Association of America.

Chicago Style (17th ed.) Citation

Dudley, Underwood. The Trisectors. Washington, D.C: The Mathematical Association of America, 1994.

MLA (9th ed.) Citation

Dudley, Underwood. The Trisectors. The Mathematical Association of America, 1994.