APA-čujuhus (7. p.)
Kopas, P. S. (2007). Taking the air: Ideas and change in Canada's national parks. UBC Press.
Chicago-čujuhus (17. p.)
Kopas, Paul Sheldon. Taking the Air: Ideas and Change in Canada's National Parks. Vancouver: UBC Press, 2007.
MLA-čujuhus (9. p.)
Kopas, Paul Sheldon. Taking the Air: Ideas and Change in Canada's National Parks. UBC Press, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.