1. Lizards as vectors of human salmonellosis;de Hamel;J Hyg (Camb),1971
2. Salmonellosis in reptiles: a review;Chiodini;Am J Epidemiol,1981
3. Salmonellae from a pet snake and its bedding;Plummer;Lancet,1992
4. Food handlers. Fitness to work. Guidance for food businesses, enforcement officers and health professionals,1995