Moyo, S. ., P. .J. Masika, and B. . Moyo. “A Survey of External Parasites of Free-Range Chickens and Their Ethno-Veterinary Control Remedies Used by Resource-Limited Farmers in Eastern Cape, South Africa”. Scientific Journal of Veterinary Advances, vol. 4, no. 2, Feb. 2015, pp. 13-20, http://sjournals.com/index.php/sjva/article/view/1430.