Heide, L. (2009). Punched-Card Systems and the Early Information Explosion, 1880–1945. Johns Hopkins University Press.
芝加哥风格引文Heide, Lars. Punched-Card Systems and the Early Information Explosion, 1880–1945. Baltimore: Johns Hopkins University Press, 2009.
MLA引文Heide, Lars. Punched-Card Systems and the Early Information Explosion, 1880–1945. Johns Hopkins University Press, 2009.
警告：这些引文格式不一定是100％准确.