Fonte:
http://www.kelseysantos.com.br/categoria-blog/software/1453-tipos-de-licencas-de-software.html
http://pplware.sapo.pt/informacao/alguns-tipos-de-licencas-de-software/
http://www.dinx.com.br/2009/08/diferencie-as-licencas-de-softwares-existentes-freeware-shareware-open-source/
http://www.slideshare.net/vanessasabino/licenas-de-software-livre
http://www.gnu.org/licenses/licenses.pt-br.html
http://www.governoeletronico.gov.br/o-gov.br/comites-tecnicos/sistemas-legados-e-licencas-de-software
http://informatica.hsw.uol.com.br/projetos-open-source6.htm
http://ccsl.ime.usp.br/files/relatorio-licencas.pdf
http://cio.uol.com.br/tecnologia/2009/07/17/as-nove-diferentes-opcoes-de-licenciamento-de-software/
http://lts-i.pcs.usp.br/xgov/pub/anexos_xgov/@0031%20LEITE%20Analise%20das%20licencas%20de%20software.pdf
http://www.ebah.com.br/content/ABAAABHdEAA/relatorio-licencas
http://www.google.com.br/imgres?um=1&hl=pt-BR&sa=N&biw=1517&bih=725&tbm=isch&tbnid=W92GoFvwHHeb-M:&imgrefurl=http://tecnologia.uol.com.br/ultnot/2007/12/20/ult4213u266.jhtm&docid=aJ10oCEO1qPqkM&imgurl=http://te.i.uol.com.br/dicas20071220softwarelivre.jpg&w=208&h=146&ei=387IT4anE-PC0QGmpcF4&zoom=1&iact=rc&dur=216&sig=107832519011580732843&page=1&tbnh=115&tbnw=165&start=0&ndsp=18&ved=1t:429,r:4,s:0,i:78&tx=97&ty=84
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