How old do you have to be if you want to publish a book?

Question

I heard that a girl published her book called,"Swordbird" and her name is Nancy Yi Fan and she is 13...how old do you have to be?

Answer 1

If you are old enough to write a book the publishers believe to have literary merit, you are old enough to be published.

Answer 2

Well, the legal issues get a little more complicated if you aren't 18. But those can be dodged, so it doesn't really matter.

Answer 3

only old enough to write.