Where can i go online to sell my college books?

I need to know if there are "legitimate" websites inorder to sell off my books.Where can i go online to sell my college books?
try half.com they are a textbook only version of eBay. Thats where I buy all my text books and I have never had a problem with them. I know the books I buy are from people around the states who are selling their textbooks.Where can i go online to sell my college books?
e-bay or at your ex-college put some message on the Bord. I believe there is some people can't afford new books and they are interested on it.Where can i go online to sell my college books?
idk know try somewhere like edward mckay if u know what that is
go to ebay