Kundiri, A.M., and O. Adebisi. 2003. “Characteristics of Air Travellers and Travel Processes at Mallam Aaminu Kano International Airport, Kano”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT 3 (October), 39-43. https://azojete.com.ng/index.php/azojete/article/view/311.