Osuna, J. J. A history of education in Puerto Rico.
Lua i Stíl Chicago (17ú heag.)Osuna, Juan José. A History of Education in Puerto Rico.
Lua MLA (8ú heag.)Osuna, Juan José. A History of Education in Puerto Rico.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.