APA引文

Dudley, U. (1997). Numerology, or, What Pythagoras wrought. Washington, DC: Mathematical Association of America.

Trích dẫn kiểu Chicago

Dudley, Underwood. Numerology, Or, What Pythagoras Wrought. Washington, DC: Mathematical Association of America, 1997.

MLA引文

Dudley, Underwood. Numerology, Or, What Pythagoras Wrought. Washington, DC: Mathematical Association of America, 1997.

警告：這些引文格式不一定是100％准確.