In the traditional publishing sphere, you'll have to find a literary agent who will represent your work to a publishing house. (happyselfpublishing.com)
If you're an author in the process of finding a literary agent, you've probably realized by now that you have two choices: established literary agents and new literary agents. (literary-agents.com)
The challenging part is how to find a literary agent for non-fiction that can sell your book to a publishing company. (readersfavorite.com)