<blockquote>
An extended quotation from another source.
Baseline: Widely available · Grouping content
When to use it
Wrap it in a figure with the attribution in figcaption; cite the source URL in the cite attribute.
When not to
Attribution does not belong inside the blockquote — the quote's author didn't say their own name; and never use it just for indentation.
Key attributes
cite- URL of the quoted source
Example
A section is a thematic grouping of content, typically with a heading.
<figure>
<blockquote cite='https://html.spec.whatwg.org/'>
<p>A section is a thematic grouping of content, typically with a heading.</p>
</blockquote>
<figcaption>— <cite>HTML: The Living Standard</cite></figcaption>
</figure>