Kravis, I. B., Heston, A. W., & Summers, R. (1982). World product and income: International comparisons of real gross product. Published for the World Bank [by] the Johns Hopkins University Press.
Chicago-referens (17:e uppl.)Kravis, Irving B., Alan W. Heston, och Robert Summers. World Product and Income: International Comparisons of Real Gross Product. Baltimore: Published for the World Bank [by] the Johns Hopkins University Press, 1982.
MLA-referens (9:e uppl.)Kravis, Irving B., et al. World Product and Income: International Comparisons of Real Gross Product. Published for the World Bank [by] the Johns Hopkins University Press, 1982.
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