Waihenya, R.K., M.M.A. Mtambo, and G. Nkwengulila. 2003. “Antibody and Interleukin-6 Response in Local Chickens Infected With Salmonella Gallinarum and Treated With Crude Extract of Aloe Secundiflora”. Tanzania Veterinary Journal 22 (2):94-101. https://tvj.sua.ac.tz/vet2/index.php/TVJ/article/view/409.