A History of Pi
Number Theory
Elementary Number Theory, Group Theory and Ramanujan Graphs
The Music of the Primes: Searching to Solve the Greatest Mystery in Mathematics
Dr. Euler's Fabulous Formula: Cures Many Mathematical Ills (Princeton Science Library Book 52)
Number Theory: Step by Step
Are Numbers Real?: The Uncanny Relationship of Mathematics and the Physical World
Euclid's Elements
Everything and More: A Compact History of Infinity
