APA

EHRENKREUTZ A. S., . (1991). The silent force behind the rise of Medieval Islamic civilization. Princeton: The Darwin Press.

Chicago

EHRENKREUTZ Andrew S, . 1991. The silent force behind the rise of Medieval Islamic civilization. Princeton: The Darwin Press.

Harvard

EHRENKREUTZ A. S., . (1991). The silent force behind the rise of Medieval Islamic civilization. Princeton: The Darwin Press.

MLA

EHRENKREUTZ Andrew S, . The silent force behind the rise of Medieval Islamic civilization. Princeton: The Darwin Press. 1991.