Não informado. (1964). IBP news. International Council of Scientific Unions, Special Committee for the International Biological Programme.
Style de citation Chicago (17e éd.)Não informado. IBP News. London: International Council of Scientific Unions, Special Committee for the International Biological Programme, 1964.
Style de citation MLA (8e éd.)Não informado. IBP News. International Council of Scientific Unions, Special Committee for the International Biological Programme, 1964.
Attention : ces citations peuvent ne pas être correctes à 100%.