Dyfyniad APA

Heide, L. (2009). Punched-Card Systems and the Early Information Explosion, 1880–1945. Johns Hopkins University Press.

Dyfyniad Arddull Chicago

Heide, Lars. Punched-Card Systems and the Early Information Explosion, 1880–1945. Baltimore: Johns Hopkins University Press, 2009.

Dyfyniad MLA

Heide, Lars. Punched-Card Systems and the Early Information Explosion, 1880–1945. Johns Hopkins University Press, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.