| English | Russian |
| reference source | источник информации (Any publication from which authoritative information can be obtained, including but not limited to reference books, catalog records, printed indexes and abstracting services, and bibliographic databases. Individuals and services outside the library that can be relied upon to provide authoritative information are considered resources for referral. ODLIS Alexander Demidov) |
| reference source | справочный материал (Alla Miagkova) |
| reference source | нормативный источник (Alexander Demidov) |
| reference source | справочные материалы (Alla Miagkova) |