Wagner, Warren L., Hoch, Peter C., and Khan, Nancy R. 2025. "Onagraceae." In Flora of New Mexico. Heil, Ken and O'Kane, Steve, editors. 699–718. St. Louis, Missouri: Missouri Botanical Garden.
Journal Article
Khan, Nancy R., Block, Timothy A., and Rhoads, Ann F. 2008. "Vascular flora and community assemblages of Evansburg State Park, Montgomery County, Pennsylvania." Journal of the Torrey Botanical Society, 135, (3) 438–458. https://doi.org/10.3159/07-RA-021.1.
