APA-referens (7:e uppl.)

(2007). Students Entering & Leaving Postsecondary Occupational Education: 1995-2001. U.S. Department of Education.

Chicago-referens (17:e uppl.)

Students Entering & Leaving Postsecondary Occupational Education: 1995-2001. U.S. Department of Education, 2007.

MLA-referens (9:e uppl.)

Students Entering & Leaving Postsecondary Occupational Education: 1995-2001. U.S. Department of Education, 2007.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.