In his book, "Macroeconomics: An Introduction" (co-authored with Lillian Duran), Mitchell provides a comprehensive overview of post-Keynesian macroeconomic theory. The book covers topics such as the nature of the economic system, the role of money and finance, and the causes of unemployment. Mitchell's approach emphasizes the importance of understanding the institutional and structural features of the economy, rather than relying on abstract, ahistorical models.