International Development Research Centre (Canada). (1983). Preventing school failure: The relationship between preschool and primary education : proceedings of a workshop on preschool research held in Bogota, Colombia, 26-29 May, 1981. International Development Research Centre.
Lua i Stíl Chicago (17ú heag.)International Development Research Centre (Canada). Preventing School Failure: The Relationship Between Preschool and Primary Education : Proceedings of a Workshop on Preschool Research Held in Bogota, Colombia, 26-29 May, 1981. Ottawa, Canada: International Development Research Centre, 1983.
Lua MLA (8ú heag.)International Development Research Centre (Canada). Preventing School Failure: The Relationship Between Preschool and Primary Education : Proceedings of a Workshop on Preschool Research Held in Bogota, Colombia, 26-29 May, 1981. International Development Research Centre, 1983.