The Economics of Contracts offers an excellent introduction to agency models. Written by one of the leading young researchers in contact theory, it is rigorous, clear, concise, and up-to-date. Researchers and students who want to learn about the economics of incentives will want to read this primer
Jean Tirole, Institut D'Économie Industrielle, Universite des Sciences Sociales, France
Students will find this a very useful introduction to the ideas of contract theory. Salanié has managed to summarize a large amount of material in a relatively short number of pages in a highly accessible and readable manner.
Oliver Hart, Professor of Economics, Harvard University