"Prohibited Noxious Weeds"(PDF). Alberta Weed Control Act, Government of Alberta. 2012. Archived from the original(PDF) on 5 July 2016. Retrieved 8 February 2018.
Ingrid M. Fordham; Richard H. Zimmerman; Beverly M. Clevidence; Brent L. Black; Eugene R. Wiley (1998). "Autumn Olive: A Potential Alternative Crop". US Department of Agriculture. Archived from the original on 28 July 2019. Retrieved 10 February 2018.
web.archive.org
Ingrid M. Fordham; Richard H. Zimmerman; Beverly M. Clevidence; Brent L. Black; Eugene R. Wiley (1998). "Autumn Olive: A Potential Alternative Crop". US Department of Agriculture. Archived from the original on 28 July 2019. Retrieved 10 February 2018.
"Prohibited Noxious Weeds"(PDF). Alberta Weed Control Act, Government of Alberta. 2012. Archived from the original(PDF) on 5 July 2016. Retrieved 8 February 2018.