- Invasive Species Program—Minnesota DNR
- Field Guide to Invasive Plants of Wisconsin —Wisconsin Department of Natural Resources
- Mistaken Identity? Invasive Plants and their Native Look-alikes
- Videos on Identification of Invasive Species —University of Wisconsin—Extension
- A Guide to Nonnative Invasive Plants Inventoried in the North by Forest Inventory and Analysis —USDA Forest Service
- Minnesota Noxious Weeds (MN DOT)
- Invasive Plant Fact Sheets —USDA Forest Service
- Invasive Plant Information —Center for Invasive Species and Ecosystem Health
- Guide to Invasive Cooperative Weed Management Areas (CWMAs) in Minnesota - Minnesota Board of Water and Soil Resources
- Weeds of Nebraska and the Great Plains, James Stubendieck and Geir Friisoe, Nebraska Department of Agriculture, 1994/95
- Biology and Management of Noxious Rangeland Weeds, 1999, edited by Roger L. Sheley and Janet K. Petroff, Oregon State University Press, Corvallis
