Dr Umar Mohammed Ali. “PRODUCTION/EXPORT/TRADE/OF/GUM/ARABIC/IN/NIGERIA”. The American Journal of Interdisciplinary Innovations and Research 5, no. 02 (February 25, 2023): 10–16. Accessed October 14, 2025. https://theamericanjournals.com/index.php/tajiir/article/view/3950.