- http://www.religionfacts.com/islam/history/ottoman.htm
- http://lostislamichistory.com/islam-and-the-ottoman-empire/
- http://en.wikipedia.org/wiki/Economic_history_of_the_Ottoman_Empire
- http://www.bbc.co.uk/religion/religions/islam/history/ottomanempire_1.shtml
- http://www.jstor.org/discover/10.2307/164294?uid=3737536&uid=2&uid=4&sid=21104596086667
- http://en.wikipedia.org/wiki/Ottoman_Empire
- http://www.britannica.com/EBchecked/topic/434996/Ottoman-Empire
- http://en.wikipedia.org/wiki/Osman_I
- http://empires.findthebest.com/q/32/2513/How-large-was-the-Ottoman-Empire-at-its-greatest-extent
- http://www.encyclopedia.com/topic/Osman_I.aspx
- http://lostislamichistory.com/islam-and-the-ottoman-empire/
- http://en.wikipedia.org/wiki/Economic_history_of_the_Ottoman_Empire
- http://www.bbc.co.uk/religion/religions/islam/history/ottomanempire_1.shtml
- http://www.jstor.org/discover/10.2307/164294?uid=3737536&uid=2&uid=4&sid=21104596086667
- http://en.wikipedia.org/wiki/Ottoman_Empire
- http://www.britannica.com/EBchecked/topic/434996/Ottoman-Empire
- http://en.wikipedia.org/wiki/Osman_I
- http://empires.findthebest.com/q/32/2513/How-large-was-the-Ottoman-Empire-at-its-greatest-extent
- http://www.encyclopedia.com/topic/Osman_I.aspx