APA-viite (7. p.)
Heide, L. (2009). Punched-Card Systems and the Early Information Explosion, 1880–1945. Johns Hopkins University Press.
Chicago-viite (17. p.)
Heide, Lars. Punched-Card Systems and the Early Information Explosion, 1880–1945. Baltimore: Johns Hopkins University Press, 2009.
MLA-viite (9. p.)
Heide, Lars. Punched-Card Systems and the Early Information Explosion, 1880–1945. Johns Hopkins University Press, 2009.
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