Sheldon Axler, Professor Emeritus, Mathematics Department, San Francisco State University
The hardcover version of Measure, Integration & Real Analysis is currently on sale for $44.99 at Springer. This sale price is valid until 30 September 2021.
Sheldon Axler. Pré-Cálculo: Uma Preparação Para o Cálculo (Precalculus: A Prelude to Calculus, second edition, translation into Portuguese), Livros Técnicos e Cientificos Editora, 2016.
Sheldon Axler. (Linear Algebra Done Right, third edition, translation into Chinese), Posts & Telecom Press, 2016.