Template:Goyder, 2009
- Goyder, D.J. 2009. A synopsis of Asclepias (Apocynaceae: Asclepiadoideae) in tropical Africa. Kew Bulletin 64(3): 369–399. DOI: 10.1007/s12225-009-9133-3
ResearchGate 
- [Date of publication: 18 October 2009.]
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