Introduction to game theory

I recommend you a textbook:
Introduction to Game Theory in Business and Economics (Paperback)
by Thomas J. Webster (Author)

Game theory is the study of strategic behavior in situations in which the decision makers are aware of the interdependence of their actions. This innovative textbook introduces students to the most basic principles of game theory - move and countermove - with an emphasis on real-world business and economic applications. Students with a background in principles of economics and business mathematics can readily understand most of the material.Demonstration problems in each chapter are designed to enhance the student's understanding of the concepts presented in the text. Many chapters include non-technical applications designed to further the student's intuitive understanding of strategic behavior. Case studies help underscore the usefulness of game theory for analyzing real-world situations. Each chapter concludes with a review and questions and exercises. An online Instructor's Manual with test bank is available to professors who adopt the text.

you can access to this book via the following link:
http://www.amazon.com/Introduction-Game-Theory-Business-Economics/dp/0765622378/ref=sr_1_1?ie=UTF8&s=books&qid=1236944210&sr=1-1