APA (7th ed.) Citation
Heck, G. W. (2006). Charlemagne, Muhammad, and the Arab roots of capitalism. De Gruyter.
Chicago Style (17th ed.) Citation
Heck, Gene W. Charlemagne, Muhammad, and the Arab Roots of Capitalism. Berlin ; New York: De Gruyter, 2006.
MLA (9th ed.) Citation
Heck, Gene W. Charlemagne, Muhammad, and the Arab Roots of Capitalism. De Gruyter, 2006.
Warning: These citations may not always be 100% accurate.