used as reference constraint (Q2616354)
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type of constraint for Wikidata properties: used to specify that a property must only be used in references or instances of citation (Q1713)
- source-only constraint
- reference-only constraint
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | used as reference constraint |
type of constraint for Wikidata properties: used to specify that a property must only be used in references or instances of citation (Q1713) |
|