Citação norma APA

(2000). Percentage of Higher Education Institutions Offering Distance Ed Courses. U.S. Department of Education.

Citação norma Chicago

Percentage of Higher Education Institutions Offering Distance Ed Courses. U.S. Department of Education, 2000.

Citação norma MLA

Percentage of Higher Education Institutions Offering Distance Ed Courses. U.S. Department of Education, 2000.

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