Verbatim text: Stutz, H. C. and L. K. Thomas. 1963. Hybridization and introgression in Cowania and Purshia. Evolution 18: 183–195.
Author: Stutz, H.C., Thomas, L.K.
Year: 1963
Title: Hybridization and introgression in Cowania and Purshia
Journal: Evolution
Volume: 18
Pages: 183–195