توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Barbera, H. (1973). Rich nations and poor in peace and war: Continuity and change in the development hierarchy of seventy nations from 1913 through 1952. Lexington Books.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Barbera, Henry. Rich Nations and Poor in Peace and War: Continuity and Change in the Development Hierarchy of Seventy Nations from 1913 Through 1952. Lexington, Mass.: Lexington Books, 1973.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Barbera, Henry. Rich Nations and Poor in Peace and War: Continuity and Change in the Development Hierarchy of Seventy Nations from 1913 Through 1952. Lexington Books, 1973.