Verbatim text: Tomlinson, P. B. 1982. Helobiae (Alismatidae). In: C. R. Metcalfe, ed. 1982. Anatomy of the monocotyledons. Oxford. Vol. 7.
Author: Tomlinson, P.B.
Year: 1982
Title: Helobiae (Alismatidae)
Editor: Metcalfe, C.R.
Book year: 1982
Book title: Anatomy of the monocotyledons
Volume: 7