Coreopsis im Germplasm Resources Information Network (GRIN), USDA, ARS, National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Abgerufen am 24. Januar 2019.
Daniel J. Crawford, Mark E. Mort: Phylogeny of Eastern North American Coreopsis (Asteraceae-Coreopsideae): insights from nuclear and plastid sequences, and comments on character evolution. In: American Journal of Botany, Volume 92, Issue 2, 2005, S. 330–336. doi:10.3732/ajb.92.2.330
John L. Strother: In: Flora of North America Editorial Committee (Hrsg.): Flora of North America North of Mexico, Volume 21 - Magnoliophyta: Asteridae, part 8: Asteraceae, part 3 (Heliantheae, Eupatorieae), Oxford University Press, New York und Oxford, 2006, ISBN 0-19-530565-5. Coreopsis Linnaeus., S. - textgleich online wie gedrucktes Werk.
