citation-needed constraint (Q28)
type of constraint for Wikidata properties: specifies that a property must have at least one reference
- citation needed constraint
- reference-needed constraint
- reference needed constraint
- source-needed constraint
- source needed constraint
- citation-required constraint
- citation required constraint
- reference-required constraint
- reference required constraint
- source-required constraint
- source required constraint
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | citation-needed constraint |
type of constraint for Wikidata properties: specifies that a property must have at least one reference |
|