Strange, James, Sheila Colla, Laurie Davies Adams, Michelle Duennes, Elaine Evans, Laura Figueroa, David Lehmann, et al. β€œAn Evidence-Based Rationale for a North American Commercial Bumble Bee Clean Stock Certification Program ”. Journal of Pollination Ecology 33 (January 24, 2023): 1–13. Accessed April 20, 2024. https://www.pollinationecology.org/index.php/jpe/article/view/721.