Tohutoro APA (7th ed.)
Guppy, C. S., & Shepard, J. (2001). Butterflies of British Columbia: Including western Alberta, southern Yukon, the Alaska Panhandle, Washington, northern Oregon, northern Idaho, northwestern Montana. UBC Press.
Tohutoru Kātū Chicago (17th ed.)
Guppy, Crispin Spencer, me Jon Shepard. Butterflies of British Columbia: Including Western Alberta, Southern Yukon, the Alaska Panhandle, Washington, Northern Oregon, Northern Idaho, Northwestern Montana. Vancouver: UBC Press, 2001.
Tohutoro MLA (9th ed.)
Guppy, Crispin Spencer, me Jon Shepard. Butterflies of British Columbia: Including Western Alberta, Southern Yukon, the Alaska Panhandle, Washington, Northern Oregon, Northern Idaho, Northwestern Montana. UBC Press, 2001.
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