Canada. Environment Canada, ebrary, Inc, & Campbell, R. W. (1990). The birds of British Columbia. UBC Press.
Citación estilo ChicagoCanada. Environment Canada, Inc ebrary, and R. Wayne Campbell. The Birds of British Columbia. Vancouver: UBC Press, 1990.
Cita MLACanada. Environment Canada, et al. The Birds of British Columbia. UBC Press, 1990.
Warning: These citations may not always be 100% accurate.