Verbatim text: Rabeler, R. K. 1985. Petrorhagia (Caryophyllaceae) in North America. Sida 11: 6–44.
Author: Rabeler, R.K.
Year: 1985
Title: Petrorhagia (Caryophyllaceae) in North America
Journal: Sida
Volume: 11
Pages: 6–44