Não informado. (1977). Population Reports. Johns Hopkins University, Population Information Program.
Style de citation Chicago (17e éd.)Não informado. Population Reports. Baltimore, Md: Johns Hopkins University, Population Information Program, 1977.
Style de citation MLA (8e éd.)Não informado. Population Reports. Johns Hopkins University, Population Information Program, 1977.
Attention : ces citations peuvent ne pas être correctes à 100%.