Reference:Liew1972a
Verbatim text: Liew, F. S. 1972. Numerical taxonomic studies on North American lady ferns and their allies. Taiwania 17: 190--221.
Author: Liew, F.S.
Year: 1972
Title: Numerical taxonomic studies on North American lady ferns and their allies
Journal: Taiwania
Volume: 17
Pages: 190–221