http://www.slideshare.net/lasserrehistoria/09-o-brasil-ps-guerra
http://www.slideshare.net/alinemaiahistoria/os-governos-das-dcadas-de-50-e-60?src=related_normal&rel=8462805
http://www.slideshare.net/Profdanisavedra/da-era-vargas-nova-repblica?src=related_normal&rel=4958181