Hey guys/gals, I need some books for my fourth semester at Sait.

These books are for the the Business Admin. course.
I can't seem to find them at all at the used bookstore , plus I don't want to spend an arm and a leg.

The books are as follows...

Public Relations: Strategies & Tactics 7th Edition, Addison - Wesley, 2003.

Introduction To Integrated Marketing Communications, Prentice Hall, 1st Edition.

Strategic Management Theory, Hills & Jones, 6th Edition.

Any help will be much appreciated. Prices will be very useful too.

Thank guys.