参考来源:
(1)莎士比亚的《仲夏夜之梦》
(2)Alfred W. Crosby, The Columbian Exchange: Biological and Cultural Consequences of 1492 (Westport:Greenwood Press, 1972); William H. McNeill, Plagues and Peoples (Oxford:Basil Blackwell, 1977).
(3)Hugh Thomas, Conquest: Cortes, Montezuma and the Fall of Old Mexico (New York:Simon & Schuster, 1993), 443-6; Rodolfo Acuna-Soto et al., 'Megadrought and Megadeath in 16th Century Mexico', Historical Review 8:4(2002), 360-2; Sherburne F. Cook and Lesley Byrd Simpson, The Population of Central Mexico in the Sixteenth Century (Berkeley:University of Califronia Press, 1948).