Advanced Aromatherapy: The Science of Essential Oil Therapy by Kurt Schnaubelt, Ph.D., this book draws on broad-based research to demostrate how essential oils interact with differenct systems of the body and how they affect emotional states as well as physical ones.

Aromatherapy an A-Z: The most comprehensive guide to aromatherapy ever published by Patricia Davis. This is the most up-to-date encyclopedia of aromatherapy available today, with over 400 entries covering 82 essential oils and more than 200 conditions.

Aromatherapy and Massage for Mother and Baby by Allison England. A wonderful must have book for all mother's to be and mothers. The book expertly guides the reader with specific advise on relieving the small, everyday discomfort of pregnancy. Safe, gentle remedies are recommended for baby care.

Aromatherapy During Your Pregnancy by Frances R. Clifford. A wonderful little book with information on Aromatherapy during pregnancy and childhood.

Aromatherapy for Healing the Spirit: Restoring Emotional and Mental Balance with Essential Oils by Gabriel Mojay is the first book to focus on the profound spiritual and psychological benefits of essential oils.

Aromatherapy Workbook by Marcel Lavabre. Lavabre explores the origins and applications of this ancient healing art in classical civilizations, tracing the medical alchemical and spiritual development of aromatherapy up to the present.

Learn about the most common essential oils - properties, suggested uses, and special features, all in one handy and easy to use reference wheel.

Encyclopedia of Aromatherapy by Chrissie Wildwood. The Encyclopedia of Aromatherapy offers the most elegantly comprehensive package on the whole art and science of aromatherapy written to date.

The Directory of Essential Oils:  Includes More Than 80 Essential Oils by Wanda Sellar. This directory is a guide to using essential oils safely, healthfully and wisely. It includes all those in popular use, as well as many more unusual oils.

The Practice of Aromatherapy By Dr. Jean Valnet

This classic manual provides detailed evidence for the efficacy of plant medicine. Valnet effectively bridges the gap between the tradition of healing with herbs and the advances of modern medicine, showing, in scientific terms, why plant medicine works, and making an impassioned plea for curtailing our use of dangerous chemical therapies.