Verbatim text: Lonard, R.I. and F.W. Gould. 1974. The North American species of Vulpia (Gramineae). Madrono 22:217-230
Author: Lonard, R.I., Gould, F.W.
Year: 1974
Title: The North American species of Vulpia (Gramineae)
Journal: Madrono
Volume: 22
Pages: 217–230