Não informado. (2010). Economic Journal of Hokkaido University. Hokkaido University, Graduate School of Economics and Business Administratio.
Lua i Stíl Chicago (17ú heag.)Não informado. Economic Journal of Hokkaido University. Sapporo, Japão: Hokkaido University, Graduate School of Economics and Business Administratio, 2010.
Lua MLA (8ú heag.)Não informado. Economic Journal of Hokkaido University. Hokkaido University, Graduate School of Economics and Business Administratio, 2010.
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