Canadian Wildlife Service, BC Environment. Wildlife Branch, ebrary, Inc, & Campbell, R. W. (2001). Passerines: Wood-warblers through old world sparrows (New ed.). UBC Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCanadian Wildlife Service, BC Environment. Wildlife Branch, Inc ebrary, और R. Wayne Campbell. Passerines: Wood-warblers Through Old World Sparrows. New ed. Vancouver [B.C.]: UBC Press, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCanadian Wildlife Service, et al. Passerines: Wood-warblers Through Old World Sparrows. New ed. UBC Press, 2001.
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