Reference:Gil-ad1997a
Verbatim text: Gil-Ad, N. L. 1997. Systematics of Viola L. subsection Boreali-Americanae. Boissiera 53: 1–130.
Author: Gil-Ad, N.L.
Year: 1997
Title: Systematics of Viola L. subsection Boreali-Americanae
Journal: Boissiera
Volume: 53
Pages: 1–130