1. The Market for Culinary Herbs, G121, Tropical Products Institute, London (1979).
2. and , Herbs: An Indexed Bibliography, 1971–1980, Elsevier, Amsterdam (1984).
3. and , Flowers of the Mediterranean, Chatto & Windus, London (1981).
4. and , The Market for Selected Herbaceous Essential Oils, G120, Tropical Products Institute, London (1979).