1.Hollensen,S. Marketing Management. A Relationship Approach. Harlow :
Prentice Hall, 2003. ISBN 0-273-64378-9.
2.Pelsmacker,P.D. – Geuens,M. – Van den Bergh,J. Marketing Communications.
Second Edition. Harlow : Prentice Hall, 2004. ISBN 0-273-68500-7 .
3.Best,R.J. Market – Based Management. Second edition. Prentice Hall, New
Yersey 2000.
4.Guiltinan,J.P. – Paul,G.W. Marketing Management. Strategies and Programs.
Sixth edition. New York : Mc Graw Hill, 1997.