Funktionentheorie

A Course of Pure Mathematics

G. H. Hardy

A course of modern analysis

E. T. Whittaker

Precalculus

Ron Larson

Introduction to Infinitesimal Analysis: Functions of One Real Variable

Veblen, Oswald

Problems and theorems in analysis

George Pólya

Precalculus

Sheldon Jay Axler

Elemente der Funktionentheorie

Konrad Knopp

Precalculus Functions And Graphs

Ron Larson

Elements of the theory of functions of a complex variable

Heinrich Durège

Complex integration and Cauchy's theorem

G. N. Watson