| Subject | English | Spanish |
| commun., IT | applications and services reference model | modelo de referencia de aplicaciones y servicios |
| gen. | integration reference point information service | servicio de información de punto de referencia de integración |
| gen. | integration reference point information service | servicio de información IRP |
| commun., IT | reference database service | servicio de base de datos de referencia |
| environ. | reference service The provision of aid by library staff trained to interpret library materials and library organizational structures to meet the informational, educational, cultural, recreational or research needs of the library's clients | servicio de referencia |