Verbatim text: Cook, C. D. K. and R. Lüönd. 1982. A revision of the genus Hydrocharis (Hydrocharitaceae). Aquatic Bot. 14: 177--204.
Author: Cook, C.D.K., L&uuml, R., ouml, nd
Year: 1982
Title: A revision of the genus Hydrocharis (Hydrocharitaceae)
Journal: Aquatic Bot
Volume: 14
Pages: 177–204