(2000). Percentage of Students Using Drugs During the Previous 30 Days: 1991-98. U.S. Department of Education.
Citação do estilo Chicago (17ª ed.)Percentage of Students Using Drugs During the Previous 30 Days: 1991-98. U.S. Department of Education, 2000.
Citação MLA (9ª ed.)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.