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Sigrid Liede and Angelika Tauber (Oct–Dec 2002), "Circumscription of the Genus Cynanchum (Apocynaceae-Asclepiadoideae)", Systematic Botany, 27 (4), American Society of Plant Taxonomists: 789–800, doi:10.1043/0363-6445-27.4.789 (inactive 31 January 2024), JSTOR3093924{{citation}}: CS1 maint: DOI inactive as of January 2024 (link)
kew.org
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"Vincetoxicum Wolf". Plants of the World Online. Royal Botanic Gardens, Kew. 2023. Retrieved 11 January 2023.