1. Kano Records Low Interest in Immunization;Aliyu;Daily Trust
2. Discussion, Session No. 3;West African Journal of Medicine,1961
3. The Last Mile in Global Poliomyelitis Eradication;Bhutta;The Lancet,2011
4. Progress Toward Poliomyelitis Eradication-Nigeria, 2005-2006;Centers for Disease Control and Prevention (CDC);Morbidity and Mortality Weekly Report,2007
5. Centers for Disease Control and Prevention (CDC) Polio This Week http://www.polioeradication.org/Dataandmonitoring/Poliothisweek.aspx