Skevington, J., Locke, M. M. 1., Young, A. D., Moran, K. M., Crins, W. J., & Marshall, S. A. 1. (2019). Field guide to the flower flies of northeastern North America. Princeton: Princeton University Press.

Skevington, Jeff, Michelle Mary 1983- Locke, Andrew D. Young, Kevin M. Moran, William J. Crins, and Stephen A. 1954- Marshall. Field Guide to the Flower Flies of Northeastern North America. Princeton: Princeton University Press, 2019.

Skevington, Jeff, et al. Field Guide to the Flower Flies of Northeastern North America. Princeton: Princeton University Press, 2019.