Não informado. (2008). Transactions of the Sapporo Natural History Society. Sapporo Natural History Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Transactions of the Sapporo Natural History Society. Sapporo, Japão: Sapporo Natural History Society, 2008.
Lua MLA (8ú heag.)Não informado. Transactions of the Sapporo Natural History Society. Sapporo Natural History Society, 2008.
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