Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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

Attenzione: Queste citazioni potrebbero non essere precise al 100%.