Cook, C. D. K. (2004). Aquatic and wetland plants of Southern Africa: An identification manual for the stoneworts (Charophytina), liverworts ( Marchantiopsida), mosses (Bryopsida), quillworts (Lycopodiopsida), ferns (Polypodiopsida)and flowering plants (Magnoliopsida) which grow in water and wetlands of Namibia, Botswana, Swaziland, Lesotho and Republic of South Africa. Backhuys.
Chicago Style (17th ed.) CitationCook, Christopher D. K. Aquatic and Wetland Plants of Southern Africa: An Identification Manual for the Stoneworts (Charophytina), Liverworts ( Marchantiopsida), Mosses (Bryopsida), Quillworts (Lycopodiopsida), Ferns (Polypodiopsida)and Flowering Plants (Magnoliopsida) Which Grow in Water and Wetlands of Namibia, Botswana, Swaziland, Lesotho and Republic of South Africa. Leiden: Backhuys, 2004.
MLA (9th ed.) CitationCook, Christopher D. K. Aquatic and Wetland Plants of Southern Africa: An Identification Manual for the Stoneworts (Charophytina), Liverworts ( Marchantiopsida), Mosses (Bryopsida), Quillworts (Lycopodiopsida), Ferns (Polypodiopsida)and Flowering Plants (Magnoliopsida) Which Grow in Water and Wetlands of Namibia, Botswana, Swaziland, Lesotho and Republic of South Africa. Backhuys, 2004.