Langley, R. W. (1980). Taxionomic studies in the asclepiadeae with particular reference to xysmalobium r. br. in southern africa.
Chicago-Zitierstil (17. Ausg.)Langley, Robert William. Taxionomic Studies in the Asclepiadeae with Particular Reference to Xysmalobium R. Br. in Southern Africa. 1980.
MLA-Zitierstil (8. Ausg.)Langley, Robert William. Taxionomic Studies in the Asclepiadeae with Particular Reference to Xysmalobium R. Br. in Southern Africa. 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.