http://disney.go.com/projectgreen/;
http://www.disney.pt/friendsforchange/ ;
http://projecto8cja.forumeiros.com/t6-10-formas-de-ajudar-o-planeta;
http://www.infonature.org/site-pt/node/17;
http://larihsaba.blogspot.com/2011/03/50-maneiras-de-ajudar-o-planeta.html;