Botermans, Marleen; Sosef, Marc S. M.; Chatrou, Lars W.; Couvreur, Thomas L. P. (2011). "Revision of the African Genus Hexalobus (Annonaceae)". Systematic Botany. 36 (1): 33–48. doi:10.1600/036364411X553108. ISSN0363-6445. S2CID85576103.
Botermans, Marleen; Sosef, Marc S. M.; Chatrou, Lars W.; Couvreur, Thomas L. P. (2011). "Revision of the African Genus Hexalobus (Annonaceae)". Systematic Botany. 36 (1): 33–48. doi:10.1600/036364411X553108. ISSN0363-6445. S2CID85576103.
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Botermans, Marleen; Sosef, Marc S. M.; Chatrou, Lars W.; Couvreur, Thomas L. P. (2011). "Revision of the African Genus Hexalobus (Annonaceae)". Systematic Botany. 36 (1): 33–48. doi:10.1600/036364411X553108. ISSN0363-6445. S2CID85576103.