19. Fuentes
Top 10 Tips for Creating Successful Business Presentations
http://presentationsoft.about.com/od/powerpointinbusiness/tp/bus_pres_tips.htm
Fotos
Clown by Jaevus
http://www.flickr.com/photos/16264113@N00/496355993
Cameleon by japi14
http://www.flickr.com/photos/62745413@N00/1545100277
Zebras by mobilevirgin
http://www.flickr.com/photos/78807491@N00/316570798
Zebra in morning light by Arno & Louise's
http://www.flickr.com/photos/15745225@N00/2298397560
March of the Penguines by Rojer
http://www.flickr.com/photos/50751757@N00/2222400084
20. Esta obra se distribuye bajo licencia CC BY-SA 2.5
http://creativecommons.org/licenses/by-sa/2.5/es/
José Fernando Melero Almoguera