1. Mills SY. Out of the Earth: The Essential Book of Herbal Medicine. London: Viking Arkana, 1991, 493-4.
2. Mills SY. Out of the Earth: The Essential Book of Herbal Medicine. London: Viking Arkana, 1991, 493-4.
3. Mills SY. Out of the Earth: The Essential Book of Herbal Medicine. London: Viking Arkana, 1991, 493-4.