Sure, first register your title with a registry company, such as ASCAP (they protect your rights and collect your royalties for you). If you can afford it, apply for an ISBN (look up ISBN online, there's only one authorized source). If you can't, let the distributor purchase the ISBN (i.e., the book's barcode and identifying number). Then you can go to Writer's Agency at http://www.wlwritersagency.com. They can sell a self-published book for you.