Okon, OE, and EE Oku. “Prevalence of Intestinal Parasites Among School Children in Two Contrasting Communities in Cross River State, Nigeria”. Nigerian Journal of Parasitology 22, no. 1 (October 26, 2006): 115–120. Accessed July 31, 2026. https://www.ajol.info/index.php/njpar/article/view/37768.