APA-referens (7:e uppl.)

Percentage of 25- to 29-year-old High School Completers with Some College. US Department of Education.

Chicago-referens (17:e uppl.)

Percentage of 25- to 29-year-old High School Completers with Some College. US Department of Education.

MLA-referens (9:e uppl.)

Percentage of 25- to 29-year-old High School Completers with Some College. US Department of Education.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.