From the Tango to the Brazuca via the Jabulani: A brief history of the World Cup ball, The Independent

With the release of the ball that will be used in Brazil next summer, we take a look through the evolution and varied responses its predecessors were met with

World Cup balls: From Telstar and Tango to Jabulani and Brazuca, the evolution and innovation of footballs

World Cup balls: Al Rihla, Tango, Jabulani & the complete history

World Cup balls: From Telstar and Tango to Jabulani and Brazuca, the evolution and innovation of footballs

Goalkeepers Dislike Official World Cup Ball - The New York Times

From the Tango to the Brazuca via the Jabulani: A brief history of the World Cup ball

World Cup balls: From Telstar and Tango to Jabulani and Brazuca, the evolution and innovation of footballs

Why is football a sphere? - Quora

World Cup balls: From Telstar and Tango to Jabulani and Brazuca, the evolution and innovation of footballs

Ball, Disrupted: A Brief History of World Cup Innovation - The Atlantic

Ahead of the Brazuca reveal we take a look back at the history of adidas World Cup balls. - SoccerBible

World Cup balls: From Telstar and Tango to Jabulani and Brazuca, the evolution and innovation of footballs