References
- Epstein W. L. House and garden plants. Irritant Contact Dermatitis, E. M. Jackson, R. Goldner. Marcel Dekker, Inc., New York 1990
- Jackson E. M. Consumer products: Cosmetics and topical over-the-counter drug products. Regulatory Toxicology, C. P. Chengelis, J. F. Holson, S. C. Gad. Raven Press, New York 1995