D. Abubakar Aliyu, I. . Mohammed Sani, B. . Ayuba, M. . Ali, and D. Abdullahi Aliyu, “EFFECTS OF ENVIRONMENTAL FACTORS ON THE PERFORMANCE OF SMALL AND MEDIUM ENTERPRISES (SMEs) IN ABUJA, NIGERIA”, ijmsr, vol. 5, no. 1, pp. 79–98, Jun. 2019.