Al Umar, Yusuf Sarkingobir, Shehu Sarkin Gobir, Sulaiman Aliyu, Umar Tambari, and Abdulrahman Hamza. “Evaluation of Some Heavy Metals Contents in Soil and Tobacco Grown in Sokoto, Nigeria”. Kaunia: Integration and Interconnection Islam and Science Journal 19, no. 1 (May 9, 2023): 9–14. Accessed January 20, 2025. https://ejournal.uin-suka.ac.id/saintek/kaunia/article/view/3980.