Reference:Maffitt2012a
Verbatim text: Maffitt, G. 2012. The Tualatin Basin Penstemon revisited. Bull. Amer. Penstemon Soc. 71: 48–53.
Author: Maffitt, G.
Year: 2012
Title: The Tualatin Basin Penstemon revisited
Journal: Bull. Amer. Penstemon Soc
Volume: 71
Pages: 48–53