Hay Fever Remedy

Clinical Ecology, Dr. George T. Lewith, Dr. Julian N. Kenyon, Thorsons Publishers Limt. Wellingborough, Northampton, England, 1985.

Lotus Materia Medica, Robin Murphy, ND, Star Lotus Academy, RR Donnelley and Sons Company, 1995.

Dictionary of Materia Medica, J. H. Clarke, MD, Health Science Press, 1984.