Leung, Albert Y.
Encyclopedia of common natural ingredients : used in food, drugs, and cosmetics
John Wiley & Sons, 1996
 Buku Referensi
Sambidge, Gordon
Natural remedies : common ailments cured
Piccadilly Press Ltd., 1992
 Buku Referensi
Murray, Michael
Encyclopedia of Natural Medicine
A Division of Prima Publishing, 1998
 Buku Teks
Smyth, Angela
Gentle medicine : an A-Z of natural remedies for common ailments
Thorsons, 1994
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Giller, Robert M.
Natural prescriptions : effective treatments for over 100 common complaints
Pavilion, 1995
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