Bureau international d'éducation. (1977). Directory - educational documentation and information services =: Répertoire - Services de documentation et d'information pédagogiques. Unesco, International Bureau of Education.
Citazione stile Chigago Style (17a edizione)Bureau international d'éducation. Directory - Educational Documentation and Information Services =: Répertoire - Services De Documentation Et D'information Pédagogiques. Paris: Unesco, International Bureau of Education, 1977.
Citatione MLA (9a ed.)Bureau international d'éducation. Directory - Educational Documentation and Information Services =: Répertoire - Services De Documentation Et D'information Pédagogiques. Unesco, International Bureau of Education, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.