Explore Books on
real functions -- instructional exposition (textbooks tutorial papers etc.).

Harmonic analysis

By Barry Simon

An introduction to classical real analysis

By Karl R. Stromberg

Real analysis

By Barry Simon

Foundations of Analysis (Pure and Applied Undergraduate Texts: Sally)

By Joseph L. Taylor

Invitation to classical analysis

By Peter L. Duren

Problems in real and functional analysis

By Alberto Torchinsky

Introduction to functional equations

By Costas Efthimiou

Fundamentals of mathematical analysis

By Sally, Paul J. Jr