E. U. Okechukwu, C. O. Ezeh, I. K. Irele, N. H. Madu, C. A. . Ejike, and C. B. Isiozor, “QUALITY MANAGEMENT PRACTICES AND PERFORMANCE OF PHARMACEUTICAL FIRMS IN ENUGU STATE”, Eur. J. M. Man. Sci., vol. 6, no. 3, May 2023.