Não informado. Wildlife research report. Bureau of Sport Fisheries and Wildlife.
Chicago-referens (17:e uppl.)Não informado. Wildlife Research Report. Washington: Bureau of Sport Fisheries and Wildlife.
MLA-referens (8:e uppl.)Não informado. Wildlife Research Report. Bureau of Sport Fisheries and Wildlife.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.