Não informado. (2008). Tsukuba Geoenvironmental Sciences. University of Tsukuba, Doctoral Program in Geoenvironmental Sciences.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Tsukuba Geoenvironmental Sciences. Tsukuba, Japão: University of Tsukuba, Doctoral Program in Geoenvironmental Sciences, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Tsukuba Geoenvironmental Sciences. University of Tsukuba, Doctoral Program in Geoenvironmental Sciences, 2008.
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