Canadian Wildlife Service, BC Environment. Wildlife Branch, ebrary, Inc, & Campbell, R. W. (2001). Passerines: Wood-warblers through old world sparrows (New ed.). UBC Press.
Chicago-čujuhus (17. p.)Canadian Wildlife Service, BC Environment. Wildlife Branch, Inc ebrary, juo R. Wayne Campbell. Passerines: Wood-warblers Through Old World Sparrows. New ed. Vancouver [B.C.]: UBC Press, 2001.
MLA-čujuhus (9. p.)Canadian Wildlife Service, et al. Passerines: Wood-warblers Through Old World Sparrows. New ed. UBC Press, 2001.
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