APA
Arrau P., Schmidt Hebbel Klaus, . (1995). Pension systems and reform : country experiences and research issues. Washigton: World Bank.
Chicago
Arrau Patricio, Schmidt Hebbel Klaus, . 1995. Pension systems and reform : country experiences and research issues. Washigton: World Bank.
Harvard
Arrau P., Schmidt Hebbel Klaus, . (1995). Pension systems and reform : country experiences and research issues. Washigton: World Bank.
MLA
Arrau Patricio, Schmidt Hebbel Klaus, . Pension systems and reform : country experiences and research issues. Washigton: World Bank. 1995.