Lua APA (7ú heag.)

Não informado. (2001). Rubber Statistical Bulletin. International Rubber Study Group.

Lua i Stíl Chicago (17ú heag.)

Não informado. Rubber Statistical Bulletin. London: International Rubber Study Group, 2001.

Lua MLA (8ú heag.)

Não informado. Rubber Statistical Bulletin. International Rubber Study Group, 2001.

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