Don't waste your money on the newer edition! Check our feedback as a seller on Ebay for proof: Ebay Feedback. This listing is for (Working with Political Science Research Methods Problems and Exercises (Fourth Edition)) 3rd edition (Pictured on the Left) by (Mycroff, Jason D.). This edition has word-for-word the same information as ISBN: 1506306713 the 4th edition (Pictured on the Right), except for a small update and a different picture on the cover. All our books are in decent, usable condition or better and may or may not contain: highlighting, writing, cover and page wear, cds and additional material. If you are unsatisfied in any way with our product you can return it within 30 days for a refund.