Ribenboim P. Classical Theory of Algebraic Numbers

New York: Springer, 2001. — 676 p. — (Universitext). — ISBN: 978-1-4419-2870-2.The exposition of the classical theory of algebraic numbers is clear and thorough, and there is a large number of exercises as well as worked out numerical examples. A careful study of this book will provide a solid background to the learning of more recent topics.