The complete guide to a healthy plant-based diet. Written by 3 highly qualified dietitians, gives authoritative nutritional guidance for everyone from infants to adults. Newly revised & expanded edition.
This is book is absolutely necessary for anyone transitioning into a vegetarian or vegan diet and a great reference for those of us already there. It goes through all of the nutrients that vegetarians and vegans might have trouble getting enough of and explain why it's important and the best ways to incorporate that nutrient into your diet. It also gives dietary advice for pregnant women, children, and the elderly.
This book is objective and not "preachy." It points out honestly what's wrong with and what's good about omnivorous, vegetarian, and vegan diets and then shows how to improve in each case. It does address reasons for veganism, but this book is in no way dogmatic. There's an entire section on "diplomacy," that is how to resolve issues between ominvores and vegetarians.
One of my favorite parts of this book is the latter half, in which advice is given on transitioning to vegetarianism or veganism. To often the changes that need to be made in lifestyle aren't addressed, in favor of reasons for going vegan or recipes. Here, however, they provide advice on mundane but necessary topics like meal planning and grocery shopping.