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-Zitierstil (17. Ausg.)Canadian Wildlife Service, BC Environment. Wildlife Branch, Inc ebrary, und R. Wayne Campbell. Passerines: Wood-warblers Through Old World Sparrows. New ed. Vancouver [B.C.]: UBC Press, 2001.
MLA-Zitierstil (9. Ausg.)Canadian Wildlife Service, et al. Passerines: Wood-warblers Through Old World Sparrows. New ed. UBC Press, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.