Não informado. (2008). Tsukuba Geoenvironmental Sciences. University of Tsukuba, Doctoral Program in Geoenvironmental Sciences.
Lua i Stíl Chicago (17ú heag.)Não informado. Tsukuba Geoenvironmental Sciences. Tsukuba, Japão: University of Tsukuba, Doctoral Program in Geoenvironmental Sciences, 2008.
Lua MLA (8ú heag.)Não informado. Tsukuba Geoenvironmental Sciences. University of Tsukuba, Doctoral Program in Geoenvironmental Sciences, 2008.
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