Citação norma APA

Percentage Distribution of 6- to 12-year-olds, 1972-97. US Department of Education.

Citação norma Chicago

Percentage Distribution of 6- to 12-year-olds, 1972-97. US Department of Education.

Citação norma MLA

Percentage Distribution of 6- to 12-year-olds, 1972-97. US Department of Education.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.