APA način citiranja (7. izdanje)
Heide, L. (2009). Punched-card systems and the early information explosion, 1880-1945. Johns Hopkins University Press.
Čikaški stil citiranja (17. izdanje)
Heide, Lars. Punched-card Systems and the Early Information Explosion, 1880-1945. Baltimore: Johns Hopkins University Press, 2009.
MLA način citiranja (9. izdanje)
Heide, Lars. Punched-card Systems and the Early Information Explosion, 1880-1945. Johns Hopkins University Press, 2009.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.