Canada. Environment Canada, ebrary, Inc, & Campbell, R. W. (1990). The birds of British Columbia. UBC Press.
Chicago-čujuhus (17. p.)Canada. Environment Canada, Inc ebrary, juo R. Wayne Campbell. The Birds of British Columbia. Vancouver: UBC Press, 1990.
MLA-čujuhus (9. p.)Canada. Environment Canada, et al. The Birds of British Columbia. UBC Press, 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.