Books.google.co.th -. The thoroughly revised & updated 6th edition of 'Comprehensive Guide to IBPS-CWE Bank PO Exam' has been designed specially for the CWE Bank PO stage 1 & 2 of the exam. A chapter on Sentence Exclusion has been introduced as asked in the 2016 PO Mains Exam. The book covers. Comprehensive Guide to IBPS Bank PO/ MT Preliminary & Main Exam (6th Edition).