Primary Source
An original source of information (study, dataset, official document).
Key takeaways
- Primary Source is an original source of information (study, dataset, official document).
- Trace every important statistic back to the study or report it came from.
- Avoid: linking to an article that summarises the source instead of the source itself.
What is Primary Source?
Linking primary sources is a high leverage EEAT and AEO move. It improves accuracy, builds trust, and increases the chance other publishers cite you in turn.
Why Primary Source matters for EEAT in 2026
Primary sources are the original studies, datasets and official documents behind a claim. Citing them makes your content more accurate and gives readers and engines a way to verify it.
For a wider view of where this fits, see our full EEAT glossary or explore the Strategy and Audits service we run for clients.
How to apply Primary Source on your site
Knowing the concept is only half of it. Work through these steps in order to put Primary Source into practice on your own pages:
- Trace every important statistic back to the study or report it came from.
- Link directly to that source, on the words it supports.
- Prefer official documentation over commentary about it.
Common mistakes to avoid
Most sites that struggle with Primary Source fall into the same traps. Check your pages against each of these before moving on:
- Linking to an article that summarises the source instead of the source itself.
- Using statistics whose origin you can't find.
- Citing outdated research when newer data exists.
Questions about Primary Source
An original source of information (study, dataset, official document).
Primary sources are the original studies, datasets and official documents behind a claim. Citing them makes your content more accurate and gives readers and engines a way to verify it.
Start here: trace every important statistic back to the study or report it came from. Then link directly to that source, on the words it supports.
The most common is linking to an article that summarises the source instead of the source itself. Another is using statistics whose origin you can't find.