Islam and missions : being papers read at the Second Missionary Conference on behalf of the Mohammedan World at Lucknow, January 23-28, 1911 / edited by E.M. Wherry, S.M. Zwemer, C.G. Mylrea.

http://www.archive.org/details/islamandmissions012033mbp

Islam and other religions, by Al-Hajj Khwaja Kamal-ud-Din.

http://www.archive.org/details/islamandotherrel00kamauoft