The PolicyMap website has a useful guide with examples for citing the maps you use from this resource: https://www.policymap.com/citing/
Regardless of which citation style you use, keep in mind that maps and reports from PolicyMap are web sources, so you will want to try to match the details of a citation for a website or webpage. In general this means you want to include:
- The author or organization that created the info
- The date of the info
- The title of the specific map or report
- The name of the website or database
- The URL where your reader can see the info for themselves
Try creating a citation and reach out to your professor, librarian, or the Writing Center to get help.