Understanding who is responsible for the content of print resources can be very helpful in deciding whether the information is likely to be from a reputable author or publisher.
Author information is usually on the back of a book or near the contents page. The Foreword of a book often includes reference to the status or accomplishments of the authors. The journal cover, or start of a journal article usually contains author information.
The UniSC Library has research databases which you can search for the publications by an author, to see if they are well published and cited (Scopus & Web of Science). This example is from Scopus:
Publisher information is usually on the title page of a book and on a journal's homepage.
There are several ways to identify reputable publishers: