1. Booms, B.H. and Bitner, M.J. (1981, “Marketing Strategies and Organization Structures for Service Firms”, in Cowell, D. (Ed.), The Marketing of Services, Heinemann, Harlow.
2. Borden, N.H. (1964, “The concept of the marketing mix”, Journal of Advertising Research, pp. 2‐7.
3. Britt, S.H. and Boyd, H.W. Jr (1969, Marketing Management & Administration Action, McGraw‐Hill, New York, NY.
4. Cowell, D. (1984, The Marketing of Services, Heinemann Marketing Series, Harlow.
5. Engel, J.F., Blackwell, R.D. and Kollat, D.T. (1978, Consumer Behaviour, 3rd ed., Dryden Press, Hinsdale, IL.