The Mathematics of the Heavens and the Earth: The Early History of Trigonometry by Glen Van Brummelen (2015-10-15): Glen van Brummelen: Amazon.com: Books
The Doctrine of Triangles: A History of Modern Trigonometry , Van Brummelen, Glen - Amazon.com
Precalculus with Trigonometry: Concepts and Applications - Student Edition (includes online access): Paul A. Foerster, Jocelyn Van Vliet: 9781604400441: Amazon.com: Books
Cyclone Gabrielle: Environment Centre Hawke's Bay helps thousands affected by devastation - NZ Herald