International Conference on Public Education Geneva, Switzerland. (1950). Introduction to mathematics in primary schools: From information supplied by the ministries of education. Unesco.
Lua i Stíl Chicago (17ú heag.)International Conference on Public Education Geneva, Switzerland. Introduction to Mathematics in Primary Schools: From Information Supplied by the Ministries of Education. Paris: Unesco, 1950.
Lua MLA (8ú heag.)International Conference on Public Education Geneva, Switzerland. Introduction to Mathematics in Primary Schools: From Information Supplied by the Ministries of Education. Unesco, 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.