It's a business. As a person in the workplace, you may not have the time or background to assess what you might read. That's fine if you read pop psych. It isn't so good if you want to apply the ideas to your workplace. Consider getting alternate opinions before you jump in to application.
University faculty are great resources, and can sometimes be involved at low or no cost.
A few phone calls to the local university psychology department may be very useful in getting a bit more balance. Why would you invest considerable time, energy and money in purchasing or applying pop psych. The best books on leadership, performance management, TQM, conflict and more summarized.