"Freedom on the Net 2018"(PDF). Freedom House. November 2018. मूल(PDF) से 1 नवंबर 2018 को पुरालेखित. अभिगमन तिथि 1 November 2018.
opennet.net
OpenNet Initiative "Summarized global Internet filtering data spreadsheet", 29 October 2012 and "Country Profiles", the OpenNet Initiative is a collaborative partnership of the Citizen Lab at the Munk School of Global Affairs, University of Toronto; the Berkman Center for Internet & Society at Harvard University; and the SecDev Group, Ottawa
web.archive.org
"Freedom on the Net 2018"(PDF). Freedom House. November 2018. मूल(PDF) से 1 नवंबर 2018 को पुरालेखित. अभिगमन तिथि 1 November 2018.
