Dyfyniad APA

(2000). Percentage of Students Enrolled in Distance Education Courses: 1995. U.S. Department of Education.

Dyfyniad Arddull Chicago

Percentage of Students Enrolled in Distance Education Courses: 1995. U.S. Department of Education, 2000.

Dyfyniad MLA

Percentage of Students Enrolled in Distance Education Courses: 1995. U.S. Department of Education, 2000.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.