Hawkes, N. (1981). Early scientific instruments. New York: Abbeville Press.
Trích dẫn kiểu ChicagoHawkes, Nigel. Early Scientific Instruments. New York: Abbeville Press, 1981.
MLA引文Hawkes, Nigel. Early Scientific Instruments. New York: Abbeville Press, 1981.
警告：這些引文格式不一定是100％准確.