Lua APA (7ú heag.)

(2007). Nation's Report Card: Mathematics 2005 Performance in Puerto Rico - Focus on the Content. U.S. Department of Education.

Lua i Stíl Chicago (17ú heag.)

Nation's Report Card: Mathematics 2005 Performance in Puerto Rico - Focus on the Content. U.S. Department of Education, 2007.

Lua MLA (9ú heag.)

Nation's Report Card: Mathematics 2005 Performance in Puerto Rico - Focus on the Content. U.S. Department of Education, 2007.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.