Handbook of Essential Oils: Science, Technology and Applications 2nd ed.
Hands on Healing Remedies
Holistic Aromatherapy for Animals
Practice of Aromatherapy
Recommended Reading For Pet Owners
The Art, Science and Business of Aromatherapy: Your Essential Oil & Entrepreneurship Guide - 2nd ed.
The Compleat Distiller
The Complete Aromatherapy & Essential Oils Handbook for Everyday Wellness
The Environment and You, 3rd ed.