Não informado. (2001). Annual Report of the Massachusetts Extension Service. Massachusetts Extension Service.
Čikaški stil citiranja (17. izdanje)Não informado. Annual Report of the Massachusetts Extension Service. Amherst, Mass: Massachusetts Extension Service, 2001.
MLA način citiranja (8. izdanje)Não informado. Annual Report of the Massachusetts Extension Service. Massachusetts Extension Service, 2001.
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