"Williams' Essentials of Nutrition and Diet Therapy" by Eleanor Schlenker and Sara Long Roth is a comprehensive textbook published in 2010 by Elsevier-Health Sciences Division. This trade paperback book, measuring 10.9 inches in length and 8.5 inches in width, contains 656 pages of valuable content focused on medical nutrition and diet therapy. Written in English, this essential resource is ideal for nursing professionals and individuals interested in the fields of nutrition and diet therapy.