Citação norma APA

(2000). Percentage of Students Using Drugs During the Previous 30 Days: 1991-98. U.S. Department of Education.

Citação norma Chicago

Percentage of Students Using Drugs During the Previous 30 Days: 1991-98. U.S. Department of Education, 2000.

Citação norma MLA

Percentage of Students Using Drugs During the Previous 30 Days: 1991-98. U.S. Department of Education, 2000.

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