According to Twitter To Tweet More Interactive Content Social Bakers
“We followed the Wall Street Journal on Twitter to find out how it works. When Tweet contains a link to an article on its website, you’ll see the option“ Resume Summary ”instead of“ Expand. ”The resume will give you an article, And sometimes even Twitter accounts of publishers and writers. When you click anywhere in the preview, you will get navigation to the article on the website. The number of retweets and favorites will still look. Article, follow these accounts, reply, love or re-read Tweet the same as you are used to. "
Obviously, all you need is a link to your content. Nevertheless, I am sure that this is more, because it does not always work.
** EDIT **
This is actually called a Twitter Card, but here’s the documentation for Twitter cards .
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