1. Strayer D, Belcher M, Dawson T, Delaney B, Fine J, Flickinger B, Friedman P (2006) Food fats and oils, 9th edn. Prepared by the Technical Committee of the Institute of Shortening and Edible Oils, Inc. NW, Washington. http://www.iseo.org/foodfats.htm . Retrieved 25.08.2009
2. Mariod AA (2000) Seeds of Sclerocarya birrea oil and protein: quality and product development aspects, M.Sc. thesis, University of Gazira, Wadmedani, Sudan
3. Steentoft M (1988) Flowering plants in West Africa. Cambridge University press, Cambridge
4. Huda ARF, Kunert O, Haslinger E, Seger C (2002) Isolation and structure elucidation of iridoid and coumarin derivatives from Xeromphis nilotica (Rubiaceae). J Chem Mon 133:1453–1458
5. Intaranongpai J, Chavasiri W, Gritsanapan W (2006) Anti-head lice effect of Annona squamosa seeds. Southeast Asian J Trop Med Public Health 37(3):532–535