Munro, Derek B. "Allium canadense (wild onion)". Canadian Biodiversity Information Facility: Canadian Poisonous Plants Information System. Government of Canada. Retrieved May 28, 2011.
Food Resource, Oregon State University. "ALLIUM CANADENSE, TREE ONION, WILD ONION". originally from Hedrick, U.P. ed., Sturtevant's Notes on Edible Plants (1919). Archived from the original on July 18, 2011. Retrieved February 21, 2011.
Food Resource, Oregon State University. "ALLIUM CANADENSE, TREE ONION, WILD ONION". originally from Hedrick, U.P. ed., Sturtevant's Notes on Edible Plants (1919). Archived from the original on July 18, 2011. Retrieved February 21, 2011.