West, W. & West, G.S. (1908), A monograph of the British Desmidiaceae. 3: 59 [comb. nov.]

basionym: Dysphinctium quadratum var. willei Schmidle legitimate

West, W. & West, G.S. (1908), A monograph of the British Desmidiaceae. 3: - [nomenclatural synonym]

nomenclatural synonym of: Cosmarium quadratum var. willei (Schmidle) Willi Krieg. & Gerloff legitimate

Entwisle, T.J. & Nairn, L. (2011), Census of Freshwater Algae in Australia. Edn. Version 1.0: - [secondary reference]

Guiry, M.D. & Guiry, G M. (2015), Algaebase web site: www.algaebase.org: - [secondary reference]

---