Unesco. Progress of literacy in various countries: A preliminary statistical study of available census data since 1900. Unesco.
Lua i Stíl Chicago (17ú heag.)Unesco. Progress of Literacy in Various Countries: A Preliminary Statistical Study of Available Census Data Since 1900. Unesco.
Lua MLA (8ú heag.)Unesco. Progress of Literacy in Various Countries: A Preliminary Statistical Study of Available Census Data Since 1900. Unesco.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.