Most Expensive Rubik's Cubes & Factors that make them so Valuable
Rubik's Cube - Wikipedia
The History of the Rubik's Cube - Meyer West IP Pty Ltd
Smallest Rubik's Cube Ever Goes on Sale in Japan
BBC World Service - Witness History, Inventing Rubik's Cube
A Twist of Fate: The Invention of the Rubik's Cube Lemelson Center for the Study of Invention and Innovation
Rubik's Cube - A History of the 1980s Puzzle
Rubik's Cube world record set in 3.13 seconds by Max Park: Watch
The Evolution of Cubing Hardware over the Years