> [[ogden]]. *Dragons, Serpents, and Slayers in the Classical and Early Christian Worlds: A Sourcebook*. Oxford, 2013. > [Google Books](https://books.google.com/books?id=FQ2pAK9luwkC&vq=indo-european&source=gbs-navlinks-s) > [pdf](a/ogden2013-sourcebook.pdf)