Παραπομπή σε μορφή APA (7η εκδ.)

(2000). Percentage Distribution of 6- to 12-year-olds, 1972-97. U.S. Department of Education.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Percentage Distribution of 6- to 12-year-olds, 1972-97. U.S. Department of Education, 2000.

Παραπομπή σε μορφή MLA (9th εκδ.)

Percentage Distribution of 6- to 12-year-olds, 1972-97. U.S. Department of Education, 2000.