Code of Colorado Regulations.
Massachusetts Institute of Technology. MIT News.
European Union. European Centre for Disease Prevention and Control.
United Kingdom Department for Environment, Food & Rural Affairs.
San Mateo County Department of Agriculture/Weights and Measures (California).
University of California - Riverside. Center for Invasive Species Research.
Orange County Vector Control District (California).
See also: Information Bulletins on other vectors/pests
San Diego Natural History Museum.
North Carolina State University. Cooperative Extension.
Agriculture & Horticulture Development Board (United Kingdom).
Baltic Marine Environment Protection Commission - Helsinki Commission (HELCOM).
Amphibian and Reptile Conservation (United Kingdom). National Amphibian and Reptile Recording Scheme.
Polska Akademia Nauk (Polish Academy of Sciences). Instytut Ochrony Przyrody (Institute of Nature Conservation).
European Food Safety Authority.
North Dakota Department of Agriculture.
North Dakota Game and Fish Department.