APA-referens (7:e uppl.)

(2007). Nation's Report Card: Mathematics 2003 & 2005 Performance in Puerto Rico - Highlights. U.S. Department of Education.

Chicago-referens (17:e uppl.)

Nation's Report Card: Mathematics 2003 & 2005 Performance in Puerto Rico - Highlights. U.S. Department of Education, 2007.

MLA-referens (9:e uppl.)

Nation's Report Card: Mathematics 2003 & 2005 Performance in Puerto Rico - Highlights. U.S. Department of Education, 2007.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.