Ellison, N.W., Liston, A., Steiner, J.J., Williams, W.M. & Taylor, N.L. 2006: Molecular phylogenetics of the clover genus Trifolium (Leguminosae). –Mol. Phylogenet. Evol. 39: 688-705.
Gillett, J.M.X. & Taylor, N.L. 2001: The World of Clovers. Iowa State University Press. 457. –Ames.
Heller, D. 1984: Trifolium in Rechinger, K.H. (ed.) Flora Iranica (Papilionaceae II) no. 157: 275-325. –Graz, Austria.
Moussavi, S.M. 2001:Trifolium diffusum, a new record from Iran. -Rostaniha 2: 57.
Nábělek F. 1923 Iter Turcico-Persicum, Pars I, Plantarum collectarum enumeratio. Spisy Vydávané Přírodovědeckou Fakultou Masarykovy University 35: 1–144.
Nemati, M. 2005: Trifolium sylvaticum Eig. (Papilionaceae), a new record for the flora of Iran. –Iran. J. Bot. 11: 27–29.
Tabad, M.A., Nemati, M. & Jalilian, N. 2015: Trifolium incarnatum L. (Papilionaceae), a new record for the flora of Iran. –Iran. J. Bot. 21: 126–128.
Yousefi, S., Saeidi, H., Maroofi, H., Assadi, M. & Ghaderi, M. 2017: Trifolium kurdistanicum (Trifolieae, .Fabaceae), a new species of Trifolium sect. Trifolium from Iran. –Phytotaxa. 297: 216–220.
Zohary, M. 1970: Trifolium L. in Davis, P.H. (ed.), Flora of Turkey, vol. 3: 384–445.–Edinburgh.
Zohary, M. 1972: Origin and evolution in the genus Trifolium. –Bot. Not. 125: 501–511.
Zohary, M. & Heller, D. 1984: The Genus Trifolium. –Israel Academy of Sciences and Humanities, Jerusalem, Israel.