APA-čujuhus (7. p.)
De Long, D. W. (2004). Lost knowledge: Confronting the threat of an aging workforce. Oxford University Press.
Chicago-čujuhus (17. p.)
De Long, David W. Lost Knowledge: Confronting the Threat of an Aging Workforce. Oxford ; New York: Oxford University Press, 2004.
MLA-čujuhus (9. p.)
De Long, David W. Lost Knowledge: Confronting the Threat of an Aging Workforce. Oxford University Press, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.