Q. i need help finding an empirical research for PTSD among veterans

I would recommend starting with our databases EBSCO or ProQuest. They both are able to limit results by empirical studies. I made a quick video for you on how to search in EBSCO and then narrow your results to empirical journals. The video is attached to this message.

Also, I showed you an example of an APA citation so that you will know what you need to fix in a typical database's APA 7 citation.

There is also a LibGuide that helps you understand Empirical Research, and locating articles.

If you have further questions, please let us know.