Waweru, Agnes W., and Dr. Peter Kariuki. “EFFECT OF PRODUCT QUALITY INVESTMENT DECISIONS ON FINANCIAL PERFORMANCE OF LARGE MANUFACTURING FIRMS IN NAIROBI METROPOLITAN REGION, KENYA”. International Research Journal of Economics and Finance 4, no. 3 (September 17, 2022): 279–296. Accessed November 1, 2026. https://www.irjp.org/index.php/IRJEF/article/view/87.