OZOEMENA, CHUKWUEMEKA C., OYEDELE M. OYEKU, and THOMAS M. OKONKWO. “SIX SIGMA AND PERFORMANCE OF SMALL SCALE MANUFACTURING FIRMS IN ABUJA”. JOURNAL OF ECONOMICS AND ALLIED RESEARCH 10, no. 2 (July 28, 2025): 243–263. Accessed July 31, 2025. http://jearecons.com/index.php/jearecons/article/view/554.