Aromatherapy: Do Essential Oils Really Work? | Johns Hopkins Medicine
Clinical Aromatherapy by Jane Buckle | AromaWeb
How and why to use essential oils | Ohio State Health & Discovery
Essential Oils: Healthcare for Today (A Beginner's Guide), by Carrie Donegan and Elena Yordan: Carrie Donegan, Elena Yordan: 9781937702137: Amazon.com: Books