Atherton, P. (1998).  Aloe vera: magic or medicine? Nursing Standard, 12(41),  49-54.

Dykman, K., Tone, C., Ford, C., & Dykman, R. (1998).  The effects of nutritional supplements on the symptoms of fibromyalgia and chronic fatigue syndrome.  Integrative  Physiology Behavior Science, 33(1), 61-71.  

Foster, S. & Tyler, V. (1993).  Tyler's Honest Herbal:  A Sensible Guide to the Use of Herbs and Related Remedies. 3rd ed., Binghamton, NY:  Haworth Press.

Hadley, S. & Petry J. (1999).  Medicinal herbs: a primer for primary care. Hospital Practice, 34(6), 109-112.

Hayes, S. M. (1999).  Lichen planus--report of successful treatment with aloe vera.  Gen Dent. 47(3), 268-72.

Jellin J. M., Batz, F. & Hitchens, K.  (1999).  Pharmacist's Letter/Prescriber's Letter Natural Medicines Comprehensive Database.  Stockton, CA:  Therapeutic Research Faculty.

Kuhn, Merrily (1999).  Complementary Therapies for Health Care Providers. Lippincott, Williams & Wilkins. 

Lawrence Review.  The Review of Natural Products.  Facts and Comparisons. St. Louis, MO 1997-1998.

Reynolds, T, et al. (1999).  Aloe vera leaf gel:  a review update.  Journal of Ethnopharmacology, 15;68(1-3): 3-37.