1. R.C. Baselt, Disposition of Toxic Drugs and Chemicals in Man, Biomedical Publications, Davis, California, 1982, pp. 123–125.
2. S. Moeschlin, Klinik und Therapie der Vergiftungen, Georg Thieme Verlag, Stuttgart, New York, 1986, pp. 583–584.
3. F.F. Reynolds, A.B. Prasad, Martindale: The ExtraPharmacopoeia, The Pharmaceutical Press, London, 1982.
4. Small doses, big problems: A selected review of highly toxic common medications;Liebelt;Pediatr. Emerg. Care,1993
5. Camphor ingestion;Gibson;Am. J. Emerg. Med.,1989