Não informado. (1971). IDS Communication. University of Sussex, Institute of Development Studies.
Čikaški stil citiranja (17. izdanje)Não informado. IDS Communication. Brighton, Inglaterra: University of Sussex, Institute of Development Studies, 1971.
MLA način citiranja (8. izdanje)Não informado. IDS Communication. University of Sussex, Institute of Development Studies, 1971.
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