annotazioni, fonti e crediti per i fotografi
(le cui foto sono pubblicate ciascuna sotto la relativa licenza Creative Commons)
#1 - Foto di Damian Gadal (www.flickr.com/photos/23024164@N06/5783775645);
#2 - Foto di Craig Moe (www.flickr.com/photos/60445767@N00/619087530);
#3 - Foto di Damian Gadal (www.flickr.com/photos/23024164@N06/7292137490);
#4 - Foto di Damian Gadal (www.flickr.com/photos/23024164@N06/7298986902);
#5 - Foto di Doc Searls (www.flickr.com/photos/docsearls/155056371);
#6 - Foto di Russ Ferriday (www.flickr.com/photos/ferriday/3918075363);
#7 - Foto di Damian Gadal (www.flickr.com/photos/23024164@N06/4670539302);
#8 - Foto di Damian Gadal (www.flickr.com/photos/23024164@N06/5278611515);
#9 - Foto di Damian Gadal (www.flickr.com/photos/23024164@N06/5357492918);
#10 - Foto di Damian Gadal (www.flickr.com/photos/23024164@N06/7321809504);
#11 - Foto di Damian Gadal (www.flickr.com/photos/23024164@N06/4666289820);
#12 - Foto di Damian Gadal (www.flickr.com/photos/23024164@N06/4668417065);
#13 - Foto di thefinned1 (www.flickr.com/photos/thefinned1/2856942597);
#14 - Foto di Bev Sykes (www.flickr.com/photos/basykes/2524233483);
#15 - Foto di Damian Gadal (www.flickr.com/photos/23024164@N06/5941267707);
#16 - Foto di Russ Ferriday (www.flickr.com/photos/ferriday/3918860306);
#17 - Foto di Russ Ferriday (www.flickr.com/photos/ferriday/3918078047);
#18 - Foto di Craig Moe (www.flickr.com/photos/60445767@N00/158198730);
#19 - Foto di Doc Searls (www.flickr.com/photos/docsearls/155072327).