Merkoša sitáhtat

APA-čujuhus (7. p.)
Merchant, C. (2002). The Columbia guide to American environmental history. Columbia University Press.
Chicago-čujuhus (17. p.)
Merchant, Carolyn. The Columbia Guide to American Environmental History. New York: Columbia University Press, 2002.
MLA-čujuhus (9. p.)
Merchant, Carolyn. The Columbia Guide to American Environmental History. Columbia University Press, 2002.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.