CLARKE, S. (2009) Essential Chemistry for Aromatherapy 2nd Edition London: Churchill Livingstone
LAWLESS, J. (2002) Complete Illustrated Guide to Aromatherapy: A Practical Approach to the Use of Essential Oils for Health and Well-being
Element Books
LAWLESS, J. (2002) Encyclopedia of Essential Oils: The Complete Guide to the Use of Aromatic Oils in Aromatherapy, Herbalism, Health and Well Being Thorsons
PRICE, S. (1998) Aromatherapy Workbook: Understanding Essential Oils from Plant to Bottle Thorsons
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