Please, can somebody help me correcting this review:

"This is a thorough and detailed book in which the author shows how the news organizations work. In the first part, we see a rather interesting description of the media content. Then the author explains from within the structure of media organizations. He compares the media work to assembly lines to make us understand better the final product that comes into our hands. We learn how journalists use their sources, what they consider newsworthy, and how much space has their autonomy. Although itís a 1979 book, many considerations are still valid today".