Braun, D. D. (1991). The rich get richer: The rise of income inequality in the United States and the world. Nelson-Hall Publishers.
Lua i Stíl Chicago (17ú heag.)Braun, Dennis Duane. The Rich Get Richer: The Rise of Income Inequality in the United States and the World. Chicago: Nelson-Hall Publishers, 1991.
Lua MLA (9ú heag.)Braun, Dennis Duane. The Rich Get Richer: The Rise of Income Inequality in the United States and the World. Nelson-Hall Publishers, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.