Piel, G. (1964). Science in the cause of man. New York: Vintage Books.
Trích dẫn kiểu ChicagoPiel, Gerard. Science in the Cause of Man. New York: Vintage Books, 1964.
MLA引文Piel, Gerard. Science in the Cause of Man. New York: Vintage Books, 1964.
警告：這些引文格式不一定是100％准確.