"Macroeconomics" by Stephen D. Williamson, Third Edition, presents a modern approach to macroeconomics, built on microeconomic principles, focusing on the market-clearing approach with a central treatment of Keynesian analysis. It covers key macroeconomic factors such as economic output, growth, unemployment, inflation, and government policies. The book emphasizes how macroeconomic research and graduate teaching are conducted, providing students with tools for later economics courses. It also incorporates real-world events, like the financial crisis, into its analysis.