http://www.delhitourism.gov.in/delhitourism/tourist_place/jama_masjid.jsp
https://en.wikipedia.org/wiki/Jama_Masjid,_Delhi
http://www.culturalindia.net/monuments/jama-masjid.html
http://www.lonelyplanet.com/india/delhi/sights/religious/jama-masjid
https://en.wikipedia.org/wiki/Marble
https://en.wikipedia.org/wiki/Sandstone
http://mathuravisit.com/mathura/jama-masjid.html
http://www.newworldencyclopedia.org/entry/Jama_Masjid,_Delhi