God Created The Integers: The Mathematical Breakthroughs that Changed History

A History of Pi

Introductory Complex Analysis

Proof and the Art of Mathematics

Elliptic Tales: Curves, Counting, and Number Theory

Sacred Geometry: Language of the Angels

Everything and More: A Compact History of Infinity

Elementary Number Theory

Combinatorics, Modeling, Elementary Number Theory: From Basic To Advanced

Introduction to Real Analysis

Elementary Real and Complex Analysis

Proofiness: How You're Being Fooled by the Numbers

Number Theory

An Introductory Course in Elementary Number Theory

Topics in Number Theory, Volumes I and II

An Introduction to Number Theory with Cryptography

One to Nine: The Inner Life of Numbers