Mahmuda, Aliyu, Aminu Alhaji Mohammed, Musbau O Alayande, Abdullahi Alhaji Magaji, Mohammed Danlami Salihu, Joseph Popoola Fabiyi, Mohammed Dalhatu Lawal, Yusuf Yakubu, Usman Mahmud, and Abubakar Danmaigoro. 2012. “Seasonal Prevalence of Gastrointestinal Nematodes of Calves in Sokoto Northwestern Nigeria”. Scientific Journal of Veterinary Advances 1 (3):82-89. http://sjournals.com/index.php/sjva/article/view/1490.