F. Iheukwuemere, A. Abu, and M. Ameh, “Effect of Human Menopausal Gonadotropin on Haematological and Serum Biochemical Parameters of Nigerian Indigenous Chickens”, Int. J. Poult. Sci., vol. 5, no. 7, pp. 632–634, Jun. 2006, doi: 10.3923/ijps.2006.632.634.