Sources that I have found useful in preparing material for my blog. I hope it will assist others to access information. It is a good practice to consult more than one reliable source.The sources are;
Oxford encyclopedia of Islamic world. at,
http://www.oxfordreference.com/view/10.1093/acref/9780195305135.001.0001/acref-9780195305135.. It is an excellent but it costs $199 a year.
University of Georgia. www.uga.edu/islam by Dr Alan Godlas. It is a comprehensive site on Islam and Sufism. All material on Islam is in one place and it us free.
Princeton University. https://www.princeton.edu/~humcomp/scholars.html. It has all Muslim scholars of the Golden age of Islam in one place.
Fordham University. internet Islamic history source book at;
https://sourcebooks.fordham.edu/islam/islamsbook.asp
Stanford encyclopedia of philosophy at;
www.plato.stanford.edu/entries/omar-khayyam. Ibn Sina, Ibn Arabi , Al Kindi and others are there.
M.I T. classics.mit.edu/Sadi/gulistan.html. Shaikh Sadi and some others are there.
Articles – On Spain. Science the Islamic Legacy in April/May issue of Aramco world 1982 a good read at;
(Ww.saudiaramcoworld.com/issue/198203/islam-the.science.legacy).. –
On Muslim women rulers see www.guide2womenleaders.com/Muslim_Leaders.htm. has .
BBC radio 4. “|IN OUR TIMES”
Wikipedia
BBC documentaries. Islam, Crusade, Spain etc.
For Islam and Sufism: Books, publications, articles, videos of Sayyed Hosein Nasr, Anne Marie Scheme, Martin Ling, R A Nicholson and Timothy Winters of Cambridge, Omid Safi d of Duke University, William Chitick on Ibn Arabi and Dr. Afzal Iqbal on Rumi. There are many mire sources which are not on this list. Khaliq
The ABCs of Islam and Sufism 