My parents will be traveling to Sweden, and possibly of Copenhagen, next year. I'd like to get them a Sweden travel book for Christmas, and was wondering if anyone had recommendations. I see Rick Steves has a Scandinavia book, but beyond that, are there any other recommendations? Books you've used that you've found useful? Additionally, are there any fiction or nonfiction books/novels/travel essays you've found interesting?
Thank you for your help!