Verbatim text: Cook, C. D. K. and M. S. Nicholls. 1987. A monographic study of the genus Sparganium (Sparganiaceae). Part 2. Subgenus Sparganium. Bot. Helv. 97: 1--44.
Author: Cook, C.D.K., Nicholls, M.S.
Year: 1987
Title: A monographic study of the genus Sparganium (Sparganiaceae). Part 2. Subgenus Sparganium
Journal: Bot. Helv
Volume: 97
Pages: 1–44