1. Davey, G. (2018) The Anxiety Epidemic: The Causes of Our Modern-Day Anxieties. Little, Brown and Company, Boston.
2. Prevalence, Psychological Responses and Associated Correlates of Depression, Anxiety and Stress in a Global Population, During the Coronavirus Disease (COVID-19) Pandemic
3. Davis, P. (2011) Aromatherapy An AZ: The Most Comprehensive Guide to Aromatherapy Ever Published. Random House, New York.
4. Hedaoo, S.A. and Chandurkar, P.A. (2019) A Review on Aromatherapy. World Journal of Pharmaceutical Research, 8, 635-651.
5. Industrial Uses of Essential Oils