Gaudreau, Sylvain, Tagnon Missihoun, and Hugo Germain. “Early Topping: An Alternative to Standard Topping Increases Yield in Cannabis Production”. Plant Science Today 7, no. 4 (October 21, 2020): 627–630. Accessed May 6, 2024. https://horizonepublishing.com/journals/index.php/PST/article/view/927.