Although this image is subject to copyright, it is covered by US fair use laws because:
The image is only being used in the article about the book (The Wiki Way) for informational and educational purposes.
Use of the book cover visually identifies the book and its author in a manner that mere prose cannot, and meets all criteria in
WP:NFCC.
This image enhances the article in which it's displayed, as it provides an immediate relevance to the reader more capably than the textual description alone.
The image is not replaceable with an uncopyrighted or freely copyrighted image of comparable educational value.
The image is the primary means of visual identification of the article topic.
The image is a low resolution image of the book cover, in an inferior graphics format (JPEG).
The image is only a small portion of the commercial product.
The use of this image will not affect the value of the original work.
The use of this image will not limit the copyright holder's rights or ability to distribute or make a profit from the original. In particular, copies could not be used to make illegal copies of the book.
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