Place at the bottom of the article page, like for Staraya Russa.

{{AttributionAlt|Orgin=[[:ru:Старая Русса|The Russian Wikivoyage]]|Lang=ru|Pagename=Старая_Русса}}

...yields:

This article is significantly based on work which can be found at The Russian Wikivoyage. A list of authors can be found here.

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