Vergara, Carlos Hernan, and Paula Fonseca-Buendía. “Pollination of Greenhouse Tomatoes by the Mexican Bumblebee Bombus Ephippiatus (Hymenoptera: Apidae)”. Journal of Pollination Ecology 7 (April 9, 2012). Accessed May 4, 2024. https://www.pollinationecology.org/index.php/jpe/article/view/163.