Bibliografia

1. http://kreciola.tv/

2. http://woodstockfestival.pl/

3.  https://www.google.pl/search?q=woodstock&biw=1360&bih=652&source=lnms&tbm=isch&sa=X&sqi=2&ved=0ahUKEwj6t-uilafNAhVHApoKHVLsBckQ_AUIBigB

4. https://www.google.pl/search?q=woodstock&biw=1360&bih=652&tbm=vid&source=lnms&sa=X&ved=0ahUKEwiSz6mklafNAhUmSJoKHd-ADjoQ_AUICigD&dpr=1