1. (a) : Natural Product Chemistry, Wiley, Chichester 1983;
2. (b) : Biosynthesis of Natural Products, Horwood, Chichester 1981;
3. (c) : The Chemistry of Natural Products, Blackie and Son, Glasgow 1985;
4. (d) : Introduction to Alkaloids, A Biogenetic Approach, Wiley. New York 1981.