ISBN: 9781260547672 is an International Student Edition of Williams’ Nutrition for Health, Fitness and Sport 12th Edition by  Eric Rawson This ISBN 9781260547672 is Textbook only. It will not come with online access code. Online Access code (should only be purchased when required by an instructor ) sold separately at other ISBN. The content of of this title on all formats are the same. Nutrition for Health Fitness and Sport uses a question-answer approach which is convenient when you may have occasional short periods to study such as riding a bus or during a lunch break. In addition the questions are arranged in a logical sequence the answer to one question often leading into the question that follows. Where appropriate cross-referencing within the text is used to expand the discussion. No deep scientific background is needed for the chemical aspects of nutrition and energy expenditureas these have been simplified. Instructors who use this book as a course text may add details of biochemistry as they feel necessary.