$20
Hello, This is a fifth edition of case in point.
The amazon link: http://www.amazon.com/Case-Point-Complete-Interview-Preparation/dp/0971015848/ref=sr_1_1?ie=UTF8&qid=1426203692&sr=8-1&keywords=case+in+point+fifth+edition
It's used for my last year's interview and it indeed helps a lot.
Please do not message this poster about other commercial services.
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