Não informado. (2008). Tsukuba Geoenvironmental Sciences. University of Tsukuba, Doctoral Program in Geoenvironmental Sciences.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Tsukuba Geoenvironmental Sciences. Tsukuba, Japão: University of Tsukuba, Doctoral Program in Geoenvironmental Sciences, 2008.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Tsukuba Geoenvironmental Sciences. University of Tsukuba, Doctoral Program in Geoenvironmental Sciences, 2008.
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