Não informado. (1964). IBP news. International Council of Scientific Unions, Special Committee for the International Biological Programme.
Čikaški stil citiranja (17. izdanje)Não informado. IBP News. London: International Council of Scientific Unions, Special Committee for the International Biological Programme, 1964.
MLA način citiranja (8. izdanje)Não informado. IBP News. International Council of Scientific Unions, Special Committee for the International Biological Programme, 1964.
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