Gary L. Lilien, Philip Kotler & K. Sridhar Moorthy: Prentice-Hall 1992
This book is about modelling and predicting the impact of marketing strategy. The broad topics covered include:
There are also several useful appendices, one of which deals with the functional forms of models.
A major strength of this book is the grounding of most models in a market behaviour framework.
This is a comprehensive book and it is accessible to anyone with some undergraduate maths and stats.