Hass Consulting Guide - This guide is intended to familiarize you with typical case interview formats so that you’ll know what to expect when you actually interview. It includes detailed explanations to all the standard frameworks used for case interviews.
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Harvard Case Interview Guide - This gives a step by step approach for all types of cases and includes few example cases also.
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Kellog Consulting Guide - This book includes quick tips for case study solving and includes a lot of practice cases.
Download Kellogg Consulting Club Case Book

Wetfeet Insider Guide - Ace Your Case - Wetfeet guide includes details of case interviews and gives a very good approach to crack the consulting interviews.
Wetfeet Insider Guide - Ace Your Case - Consulting Interview