Yamada, T. (1989). Social security, savings, and labor supply of the elderly in Japan. University Microfilms International.
Chicago Style aipamenaYamada, Tetsuji. Social Security, Savings, and Labor Supply of the Elderly in Japan. Ann Arbor, Mich.: University Microfilms International, 1989.
MLA aipamenaYamada, Tetsuji. Social Security, Savings, and Labor Supply of the Elderly in Japan. University Microfilms International, 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.