Zdroje

https://en.wikipedia.org/wiki/Basketball_(ball)

https://www.quora.com/What-s-the-main-difference-between-an-outdoor-basketball-vs-a-combination-indoor-outdoor-basketball

https://www.spalding.com.au/basketballs/indoor.html

https://www.spalding.com.au/basketballs/indoor/official-nbl-indigenous-round-game-ball.html - obrázok

https://www.newshub360.net/best-outdoor-basketballs/ - obrázok 

https://inthelab.tv/products/silent-basketball - text aj obrázok

https://www.sportcentral.cz/magazin/basketbal-pravidla - obrázok 

https://www.craiyon.com/image/lplszKqvRQGVNWs8DO5m5g - obrázok

https://www.craiyon.com/