I had the impression that anything called the "body of knowledge" would be a very large book, but this is not the case. This is more of a glossary of project management terms than a "body of knowledge". Everything is covered, but only very briefly - for example there is one page on leadership, one on teamwork and one on configuration management. So if you are a project manager looking for some practical help, this is not the book for you.
There is a good bibliography for further reading at the end of each page