Não informado. (1964). IBP news. International Council of Scientific Unions, Special Committee for the International Biological Programme.
Chicago-Zitierstil (17. Ausg.)Não informado. IBP News. London: International Council of Scientific Unions, Special Committee for the International Biological Programme, 1964.
MLA-Zitierstil (8. Ausg.)Não informado. IBP News. International Council of Scientific Unions, Special Committee for the International Biological Programme, 1964.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.