Percentage Distribution of 6- to 12-year-olds, 1972-97. US Department of Education.
Style de citation Chicago (17e éd.)Percentage Distribution of 6- to 12-year-olds, 1972-97. US Department of Education.
Style de citation MLA (9e éd.)Percentage Distribution of 6- to 12-year-olds, 1972-97. US Department of Education.
Attention : ces citations peuvent ne pas être correctes à 100%.