APA-čujuhus (7. p.)
Canada. Environment Canada, ebrary, Inc, & Campbell, R. W. (1990). The birds of British Columbia. UBS Press.
Chicago-čujuhus (17. p.)
Canada. Environment Canada, Inc ebrary, juo R. Wayne Campbell. The Birds of British Columbia. Vancouver: UBS Press, 1990.
MLA-čujuhus (9. p.)
Canada. Environment Canada, et al. The Birds of British Columbia. UBS Press, 1990.
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