The image depicts the cover of the book discussed in the article.
The image illustrates an educational article about the book that the image represents.
The image depicts the main characters from the series.
The image is a low resolution image, and thus not suitable for production of counterfeit goods.
The image is not used in a manner that is likely to replace the original market role of the original copyrighted media
The image is not replaceable with an uncopyrighted or freely copyrighted image of comparable educational value, nor could one be created.
The image is not used in such a way that a reader would be confused into believing that the article is written or authorized by the owner of the image.
Licensing
This image is of book cover(s), and the copyright for it is most likely owned either by the artist who created the cover(s) or the publisher of the book(s). It is believed that the use of low-resolution images of book covers
to illustrate an article discussing the book in question