Não informado. (2002). Chikusan Shikenjo Kenkyu Hokoku. National Institute of Animal Husbandry.
Lua i Stíl Chicago (17ú heag.)Não informado. Chikusan Shikenjo Kenkyu Hokoku. Chiba, Japão: National Institute of Animal Husbandry, 2002.
Lua MLA (8ú heag.)Não informado. Chikusan Shikenjo Kenkyu Hokoku. National Institute of Animal Husbandry, 2002.
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