Crosby, A. W. (1972). The Columbian exchange: Biological and cultural consequences of 1492. Greenwood.
Lua i Stíl Chicago (17ú heag.)Crosby, Alfred W. The Columbian Exchange: Biological and Cultural Consequences of 1492. Westport: Greenwood, 1972.
Lua MLA (9ú heag.)Crosby, Alfred W. The Columbian Exchange: Biological and Cultural Consequences of 1492. Greenwood, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.