Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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