APA-referens (7:e uppl.)

(2007). Secondary School Course Classification System: School Codes for the Exchange of Data. U.S. Department of Education.

Chicago-referens (17:e uppl.)

Secondary School Course Classification System: School Codes for the Exchange of Data. U.S. Department of Education, 2007.

MLA-referens (9:e uppl.)

Secondary School Course Classification System: School Codes for the Exchange of Data. U.S. Department of Education, 2007.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.