Crone, Patricia & Cook, Michael: Hagarism. The Making of the Islamic World. Cambridge University Press, 1977. Teoksen verkkoversio.
brill.com
Robinson, Chase F.: ”22 Crone and the End of Orientalism”, Islamic Cultures, Islamic Contexts. Essays in Honor of Professor Patricia Crone, s. 598. Brill, 2014. ISBN 978-90-04-25201-1. Teoksen verkkoversio.
ias.edu
Patricia Crone Institute for Advanced Study. Viitattu 9.12.2021.
Crone, P.: What do we actually know about Mohammed?Open Democracy. 10.5.2008 " this source [= Doctrina Jacobi] gives us pretty irrefutable evidence that he was an historical figure.".