(2007). Nation's Report Card: Mathematics 2003 & 2005 Performance in Puerto Rico - Highlights. U.S. Department of Education.
Chicago-viite (17. p.)Nation's Report Card: Mathematics 2003 & 2005 Performance in Puerto Rico - Highlights. U.S. Department of Education, 2007.
MLA-viite (9. p.)Nation's Report Card: Mathematics 2003 & 2005 Performance in Puerto Rico - Highlights. U.S. Department of Education, 2007.
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