Mood Ring Info
- Wikipedia: Mood Ring
- HowStuffWorks: How Do Mood Rings Work?
- Super70s.com: 1970s Fads: Mood Ring
- Retroland: Mood Rings
- Crave: Mood Phone Analyzes Your Emotions (November 17, 2006)
- OhGizmo!: Revenge of the 70's: Mood Ring Furniture (August 28, 2007)
- Google Book Search: The 1970s: Mood Rings
- Psychology Today: Egotronic: Mood Ring Reincarnated