Crosby, A. W. (1987). The Columbian voyages, the Columbian exchange, and their historians. American Historical Association.
Chicago-Zitierstil (17. Ausg.)Crosby, Alfred W. The Columbian Voyages, the Columbian Exchange, and Their Historians. Washington, D.C: American Historical Association, 1987.
MLA-Zitierstil (9. Ausg.)Crosby, Alfred W. The Columbian Voyages, the Columbian Exchange, and Their Historians. American Historical Association, 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.