How to Call Author Data

If you would please click this link –
http://secure.agentauto.com/development/inventory/#search/statustag-Used/

Under each inquire button, I would like to display the name of the author whom owns each specific listing. For example, one listing is owned by Account1 and another is owned by account2. I want to be able to display the owner of the listing while people are browsing.

Could someone tell me the code I need to use? I know where I need to paste it.