Everything You Always Wanted To Know About Mathematics
Brendan W. Sullivan
Information Retrieval: Implementing and Evaluating Search Engines
Stefan Buttcher & Charles L. A. Clarke & Gordon V. Cormack
Proofs and Refutations: The Logic of Mathematical Discovery
Imre Lakatos
Bayesian Data Analysis
Andrew Gelman
Introduction to Linear Algebra 5th Edition
Gilbert Strang