Graphic Artists Guild handbook : pricing & ethical guidelines
Graphic Artists Guild (U.S.)
Ray Tracing Gems High-Quality & Real-Time Rendering & DXR & ...
Eric Haines, Tomas Akenine-Möller
Divine Proportions: Rational Trigonometry to Universal Geometry
Norman John Wildberger
Hidden Hand
Clive Hamilton & Mareike Ohlberg
Sphaera mundi
Sacro Bosco, Joannes de, active 1230; Regiomontanus, Joannes, ...