Behrstock, Robert Aaron. “New Records of Pollinators and Other Insects Associated With Arizona Milkweed, Asclepias Angustifolia, at Four Sites in Southeastern Arizona”. Journal of Pollination Ecology 27 (February 4, 2021). Accessed November 21, 2024. https://pollinationecology.org/index.php/jpe/article/view/621.