WASET
    Immanuel I. Bitto and  Thomas Agam,  Sperm Production Rate, Gonadal and Extragonadal Sperm Reserves in the Sokoto Red (Maradi) Buck in a Tropical Environment.   journal   = {International Journal of Animal and Veterinary Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2012, vol. 67(7). 477 - 479
    [viewed 10 May 2024]. Available from: https://publications.waset.org/pdf/10219.