Trifoliumpolymorphum im Germplasm Resources Information Network (GRIN), USDA, ARS, National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Abgerufen am 8. Juni 2025.
doi.org
Daniel Real, Marco Dalla Rizza, Rafael Reyno, Kenneth H. Quesenberry: Breeding System of the Aerial Flowers in an Amphicarpic Clover Species: Trifolium polymorphum. In: Crop Science, Volume 47, Issue 4, 2007, 1401–1406. doi:10.2135/cropsci2006.11.0744online.
researchgate.net
Daniel Real, Marco Dalla Rizza, Rafael Reyno, Kenneth H. Quesenberry: Breeding System of the Aerial Flowers in an Amphicarpic Clover Species: Trifolium polymorphum. In: Crop Science, Volume 47, Issue 4, 2007, 1401–1406. doi:10.2135/cropsci2006.11.0744online.