1. The Etruscans. Weidenfeld and Nicolson, London (1980).
2. The New Encyclopaedia Britannica. Britannica, London (1989).
3. Climate, History and the Modern World. Methuen, London (1982).
4. Herodotus, History, transl. by A. D. Godley, Loeb Classical Library, Book VII; p. 187. Heinemann, London (1975).
5. and (eds), Mycotoxins in Human and Animal Health. Pathotox Publications, Park Forest South, IL (1977).