Shakunthala,
The PMBOK Guide is owned and published by the Project Management Institute (PMI) and not by us. It is also not included in our products, so you have to purchase/download it separately. Your two best options:
1.) Sign up to become a member of PMI. This will cost you around $130. But... you get a large discount on our PMP exam application fee and you also receive a free PDF copy of the PMBOK Guide. Together these two items are worth more than $130.
2.) You can order a printed copy from Amazon
www.project-management-prepcast.com/pmbok