Achoja, F.O., P.C. Ike, and P.O. Akporhuarcho. “Economics of Veterinary Services Delivery Among Commercial Poultry Farmers in a Market-Driven Economy: Evidence from Delta State, Nigeria”. International Journal of Poultry Science 9, no. 12 (November 15, 2010): 1140–1145. Accessed September 22, 2025. https://ijpsjournal.org/index.php/ijps/article/view/1552.