EUCLID. The Elements. Books 1-13.
APOLLONIUS OF PERGA. Conics. Green Lion Press
ISAAC NEWTON. The Principia : Mathematical Principles of Natural Philosophy
FELIX KLEIN. Elementary Mathematics From An Advanced Standpoint: Arithmetic Algebra Analysis.
CHARLES DARWIN On the origin of species.
MAOR E. 1998. Trigonometric delights. Princeton University Press.