•  Diet for a Small Planet by Francis Moore Lappe

While not directly promoting vegetarianism, this book provides perspective on the wastefulness of land, grain, water, energy, and other resources, at a time when millions of people around the globe are dying annually due to hunger and its effects. Great explanation of the issues connected to our diet and level of consumption.

"We got hooked on grain-fed meat just as we got hooked on gas guzzling automobiles. Big cars 'made sense' only when oil was cheap; grain-fed meat 'makes sense' only because the true costs of producing it are not counted." - Diet for a Small Planet

•  Diet for a New America
and
•  The Food Revolution: How Your Diet can Save Your Life and the World both by John Robbins

After declining to inherit the Baskin-Robbins ice cream chain, the author offers these books about how changes to your diet can impact the way you live and create a more compassionate and sustainable world.

Aren't sure you're getting all the nutrients you need? Check out:

•  The Tufts University Guide to Total Nutrition by Stanley Gershoff

This book does a nice job of highlighting important nutrients within a balanced diet and how to make sure you include them year-round.

•  The Vegetarian Way : Total Health for You and Your Family by Virginia & Mark Messina

  The Messina 's provide a comprehensive look at transitioning into a healthy vegetarian lifestyle. This is another great resource to have on hand.