The list of source material I've used so far in development of my project.
Books
Dr Thomas Asbridge: 'The First Crusade: A New History'
Dr Toby Purser: 'The First Crusade and the Crusader States, 1073-1192'
Edward Peters: 'The First Crusade
Journal Articles
Dr Paul Crawford: 'The First Crusade'
Dr John France: 'Anna Comnena, the Alexiad, and the First Crusade'
Paul Magadalino: 'The Byzantine Background to the First Crusade'
Websites
http://www.fordham.edu/halsall/sbook1k.asp
