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"Zanthoxylum L."TROPICOS. Missouri Botanical Garden. Archived from the original on 2010-09-10. Retrieved 2010-02-26.
"{title}". Archived from the original on 2017-12-17. Retrieved 2017-05-18.
The Nigerian Zanthoxylum; Chemical and biological values. S. K. Adesina, Afr. J. Trad. CAM, 2005, volume 2, issue 3, pages 282-301 (articleArchived 2016-03-03 at the Wayback Machine)