Darling, Emily S., and Spencer C.H. Barrett. “Sit-and-Wait Pollination in the Spring Flowering Woodland Plant, Trillium Grandiflorum”. Journal of Pollination Ecology 5 (July 14, 2011): 81–85. Accessed October 31, 2024. https://www.pollinationecology.org/index.php/jpe/article/view/112.