Brown, P. M. (2010). Woodland & Bog Rein orchids in your pocket: A guide to native Platanthera species of the continental United States and Canada. University of Iowa Press.
Chicago-referens (17:e uppl.)Brown, Paul Martin. Woodland & Bog Rein Orchids in Your Pocket: A Guide to Native Platanthera Species of the Continental United States and Canada. [Iowa: University of Iowa Press, 2010.
MLA-referens (9:e uppl.)Brown, Paul Martin. Woodland & Bog Rein Orchids in Your Pocket: A Guide to Native Platanthera Species of the Continental United States and Canada. University of Iowa Press, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.