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 [u.a.]: de Gruyter, 2006.

MLA (9th ed.) Citation

Heck, Gene W. Charlemagne, Muhammad, and the Arab Roots of Capitalism. de Gruyter, 2006.