Water plants of the world: A manual for the identification of the genera freshwater macrophytes. Junk 1974.
Chicago-viite (17. p.)Water Plants of the World: A Manual for the Identification of the Genera Freshwater Macrophytes. The Hague: Junk 1974.
MLA-viite (9. p.)Water Plants of the World: A Manual for the Identification of the Genera Freshwater Macrophytes. Junk 1974.
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