Microeconomic Theory by Andreu Mas-Colell, Michael D. Whinston, and Jerry R. Green is the standard US graduate level microeconomics textbook. [1]
First published in 1995, the book consists of five parts: Part I: Individual Decision-Making; Part II: Game Theory; Part III: Market Equilibrium and Market Failure; Part IV: General Equilibrium; Part V: Welfare Economics and Incentives. The book provides a rigorous (mathematical) and lengthy (nearly 1000 pages) treatment of the standard microeconomic theorems and their proofs. [2] [3]
The book became the standard textbook soon after its 1995 publication. And, over 25 years later, it is still widely used. [1] [4]