Bremness, Lesley
The complete book of herbs: a practical guide to growing & using herbs
Dorling Kindersley, 1988
 Buku Teks SO
Barnard, Julian
The healing herbs of edward bach: an illustrated guide to the flower remedies
Ashgrove Press, 1988
 Buku Referensi
Harvey, Clare G.
The encyclopaedia of flower remedies: the healing power of flower essences from around the world
Thorsons, 1995
 Buku Referensi
Swamy, B.G.L, autnor
From flower to fruit : embryology of flowering plants
McGraw-Hill, 1980
 Buku Teks SO
Diekelmann, John
Natural landscaping : designing with native plant communities
New York: McGraw-Hill, 1982
 Buku Teks SO