Blokpoel, H., & Tessier, G. (1988). The Ring-billed gull in Ontario: A review of a new problem species. Ontario, Canadá: CWS.
Chicago Style CitationBlokpoel, H., and G.D. Tessier. The Ring-billed Gull in Ontario: A Review of a New Problem Species. Ontario, Canadá: CWS, 1988.
MLA CitationBlokpoel, H., and G.D. Tessier. The Ring-billed Gull in Ontario: A Review of a New Problem Species. Ontario, Canadá: CWS, 1988.
Warning: These citations may not always be 100% accurate.