Michael Tadman, "The Demographic Cost of Sugar: Debates on Slave Societies and Natural Increase in the Americas," The American Historical Review Dec. 2000 105:5 online
Daniel Scott Smith, "The Demographic History of Colonial New England," Journal of Economic History Vol. 32, No. 1, (Mar., 1972), pp. 165-183 is advanced （页面存档备份，存于互联网档案馆）
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Daniel Scott Smith, "The Demographic History of Colonial New England," Journal of Economic History Vol. 32, No. 1, (Mar., 1972), pp. 165-183 is advanced （页面存档备份，存于互联网档案馆）
