Gilder, G. (1981). Wealth and poverty. Kalyani.
Chicago Style (17th ed.) ZitazioaGilder, George. Wealth and Poverty. New Delhi: Kalyani, 1981.
MLA (9th ed.) ZitazioaGilder, George. Wealth and Poverty. Kalyani, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.