A Guide to the Project Management Body of Knowledge: (Pmbok Guide) by Project Management Institute
For taking PMP test, you MUST have this book.studying just this book and the free online tests, you can pass the PMP test (I did). For an experienced PM, the definitions and calculations are not difficult to learn (learn = memorize).
This book explains the Project Management steps/procedures perfectly and it is easy to read and understand.
It may not be the best, but certainly good reference considering it is free for PMI members.
This is very good book for people who are working in projects mode. May not be that much useful people who are working in functional style of operations.
This is a recommended book for one of my Master level courses. I have only just started reading it but it is already very useful for Project Management and I am finding that it contains lots of information that will be helpful to me in working through PM.
