New York, GmatClub, 2012. - 10 p.
Critical Reasoning methods will teach you how to recognize GMAT question types, and how to separate correct answers from incorrect answers. You will improve your accuracy in answering questions and your speed as well.
CR questions:
Must be true/Inference/Conclusion
Main Point Question
Weaken the argument/conclusion
Cause-Effect Reasoning
Strengthen and Assumption