”Heavy Metal Contamination of African Cat Fish (Clarias gariepinus) from Industrial Effluent and Domestic Waste-contaminated Rivers and Home bred sources in Zaria, Nigeria”, AJBR, vsk. 23, nro 1, s. 101–105, tammi 2020, Viitattu: 6. huhtikuuta 2026. [Verkossa]. Saatavissa: https://ojshostng.com/index.php/ajbr/article/view/874