External Links

• Revised (v.3.5) System Reference Document (archived August 19th, 2006)
• d20 Modern System Reference Document (archived August 19th, 2006)
• Archives of Nethys - Pathfinder RPG Database
• Archives of Nethys - Starfinder RPG Database
• d20 System Reference Document 3.0
• The Hypertext d20 SRD