D&D Science Books and Spellwriting Compendiums

Books (click on this if they aren't loading)

Science of the Warlock Spell Compendium	Arcane Spectroscopy	Arcane Engineering
The Science Spellbook	The Spell Writing Guide	The Spell Saying Guide
The Theory of Magic

Class-based spell writing systems

Compendiums

Cleric Spell Compendium	Warlock Spell Compendium	Wizard Spell Compendium
Druid Spell Compendium	Sorcerer Spell Compendium