Essential Oil Safety: A Guide for Health Care Professionals
Aromatherapy Workbook
Medical Aromatherapy: Healing with Essential Oils
Aromatherapy for the Healthy Child: More Than 300 Natural, Nontoxic, and Fragrant Essential Oil Blends (More Than 300 Natural, Non-Toxic and Fragrant Essential Oil)
The Healing Intelligence of Essential Oils: The Science of Advanced Aromatherapy
Safety of Essential Oils in Pregnancy and Childbirth:a guide for midwives