If your child is old enough to understand, and you trust him/her, Go for any book!
Well, Parents, if you're worried like my mom is. Don't sweat it. If you think you're child is mature enough, let him/her read whatever he/she wants. Trust me. There was plenty of cursing in this book, yes and other stuff, but my parents know/trust I don't do those things. I honestly think that with language like that, it only brightens up a sentence, though cussing is bad for kids. If you hold back on your children, they'll only learn the hard way.