Verbatim text: Coleman, J. R. 1966b. A taxonomic revision of section Sonoricola of the genus Verbesina (Compositae). Madroño 18: 129–137.
Author: Coleman, J.R.
Year: 1966b
Title: A taxonomic revision of section Sonoricola of the genus Verbesina (Compositae)
Journal: Madroño
Volume: 18
Pages: 129–137