APA

Kravis I. B., Heston A. W., Summers R. 1., United Nations. Statistical Office, World Bank & United Nations International Comparison Project. (1978). International comparisons of real product and purchasing power. Baltimore: Published for the World Bank [by] the Johns Hopkins University Press.

Chicago

Kravis Irving B, Heston Alan W, Summers Robert 1922, United Nations. Statistical Office, World Bank and United Nations International Comparison Project. 1978. International comparisons of real product and purchasing power. Baltimore: Published for the World Bank [by] the Johns Hopkins University Press.

Harvard

Kravis I. B., Heston A. W., Summers R. 1., United Nations. Statistical Office, World Bank and United Nations International Comparison Project. (1978). International comparisons of real product and purchasing power. Baltimore: Published for the World Bank [by] the Johns Hopkins University Press.

MLA

Kravis Irving B, Heston Alan W, Summers Robert 1922, United Nations. Statistical Office, World Bank and United Nations International Comparison Project. International comparisons of real product and purchasing power. Baltimore: Published for the World Bank [by] the Johns Hopkins University Press. 1978.