Autor: Pete Souza, The Obama-Biden Transition Project
Título: Official photographic portrait of US President Barack Obama
Data: 13 de Janeiro de 2009
Origem: http://change.gov/newsroom/entry/new_official_portrait_released/
Fonte: https://pt.m.wikipedia.org/wiki/Ficheiro:Official_portrait_of_Barack_Obama.jpg
Licença: https://creativecommons.org/licenses/by/3.0/deed.pt
