1. J.C.B. Bontje, Ondernemersboek: Doe-het-zelf methode voor Doorlichten en plannen maken in kleine en middelgrote ondernemingen, CED Samson, Brussel, 1988.
2. P. Harmon, B.S. John, Creating Expert Systems for Business and Industry, Wiley, 1989.
3. A.C. Hax, N.S. Majluf, The Strategy Concept and Process: A Pragmatic Approach, Prentice-Hall, 1991.
4. R.D. Hisrich, M.P. Peters, Entrepreneurship: Starting, Developing and Managing a New Enterprise, Homewood, Boston, 1989.
5. S.C. Jain, Marketing Planning and Strategy, 3rd edn., South Western Publishing, Cincinnati, OH, 1990.