Benn, Ryan (11 February 2019). "The Magic of Maple". Alive Magazine. Retrieved 1 July 2022.
books.google.com
Spencer, James Burns (1913). The Maple Sugar Industry in Canada. Bulletin No. 2 B. Ottawa: Dominion of Canada, Department of Agriculture. pp. 21–25. Retrieved September 14, 2022 – via Google Books.
