Allison, H.A.(2000). Production/Operation Management. MacDonald and Evans Ltd., London.
Braide, J.J., M.(2005). Theory and Practice of Cost Accounting. Spring Field Publisher ltd Owerri, Nigeria.
Farrington, B., & Lysons, K.(2006)., purchasing and supply chain management. London: Pearson Education.
Hills, N.S. (, 2000). Contemporary Management. Aotel K. Prentice Hall of India.
Imaga, E.U.L.(2003). Theory and Practice of Production and Operations Management. 3rd Edition. PHYCE KEREX Publishers. Enugu ISBN: 978- 36014-9-0.
J. J. Coyle, E. J. Bardi, and C. J. Langley Jr(2003). The Management of Business Logistics. A Supply Shain Perspective, 7th ed. SouthWestern Canada.
J. W. Toomey (2000). Inventory Management: Principles, Concepts, and Techniques, The Netherlands: Kluwer Academic publisher.
Jaja, S.A. (2004). Management Practice and Theory. Peal Publisher Ltd P.H Nigeria.
Kotler, P.(2002). Marketing Management. 2nd Edition. The Millennium Edition. New Delhi: Prentice Hill of Indian
L. Bourne and D. H. T. Walker(2005). “Visualising and mapping stakeholder influence,” Journal of Management Decision, vol. 43, no. 5, pp. 649-660.
Lucy, T.(2000). Management Accounting. D. P. Publication Ltd. Akhni 142-144 UX Bridge RD Shepherd London W.R. & A.W.
P. Kotler(2002). Marketing Management: The Millennium Edition, 2nd ed. New Delhi: Prentice Hill of India.
Pandey, I. M.(2005). Financial Management. 8th Edition, Vilkas Publishing House, PVT Ltd.
Stevenson, W.J.(2007). Operations Management. Instructors Edition McGraw-Hill, Irwin www.mhhe.com
Telsang, M. (2010). Industrial Engineering and Production Management S Chand and Company Ltd. ISBN: 81 – 219 – 1773 – 5.
Waters, C.D.J.(1989). A Practical Introduction to Management Science. Addison Wesley Publishing Company, Inc. ISBN: 9-201-41603-1.