(243687) The Six Sigma Green Belt Study Guide - Secrets Handbook for the ASQ Certification Exam by Mometrix Test Prep is a comprehensive study aid designed for professionals looking to prepare for their certification exam. This 4th edition book includes practice test questions, detailed answer explanations, and covers crucial subject areas in the field of Six Sigma. Published in 2021 by Mometrix Media LLC, this trade paperback study guide is 137 pages long and is written in English. It is an essential resource for individuals seeking to enhance their knowledge and skills in Six Sigma. There is no writing or water damage or staining in/on book, I would have listed it as "like new" except for the creased line top to bottom about 1/2 inch from left edge of front cover.