Greene, A. N. (2008). Horses at work: Harnessing power in industrial America. Harvard University Press.
Chicago-referens (17:e uppl.)Greene, Ann Norton. Horses at Work: Harnessing Power in Industrial America. Cambridge, Mass.: Harvard University Press, 2008.
MLA-referens (9:e uppl.)Greene, Ann Norton. Horses at Work: Harnessing Power in Industrial America. Harvard University Press, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.