Verbatim text: Daoud, H. S. and R. L. Wilbur. 1965. A revision of the North American species of Helianthemum (Cistaceae). Rhodora 67: 63–82;201–216;255–312.
Author: Daoud, H.S., Wilbur, R.L.
Year: 1965
Title: A revision of the North American species of Helianthemum (Cistaceae)
Journal: Rhodora
Volume: 67
Pages: 63–82201–216255–312