توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Kravis, I. B. (1982). World product and income: International comparison of real gross produced by the sta- statistical office of the United Nations and the World Bank. The Johns Hopkins Univ.Pr. (for World Bank).

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Kravis, Irving B. World Product and Income: International Comparison of Real Gross Produced by the Sta- Statistical Office of the United Nations and the World Bank. Baltimore: The Johns Hopkins Univ.Pr. (for World Bank), 1982.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Kravis, Irving B. World Product and Income: International Comparison of Real Gross Produced by the Sta- Statistical Office of the United Nations and the World Bank. The Johns Hopkins Univ.Pr. (for World Bank), 1982.