- Gastrointestinal Microbiology: Volume 1 Gastrointestinal Ecosystems and Fermentations
- 1,000 Little Chats with God: And You Can Listen Too
- Music for St Cecilia's Day: From Purcell to Handel
- Between Now and Forever
- Gastrointestinal Microbiology Vol. II: Gastrointestinal Microbes and Host Interactions (Chapman & Hall Microbiology Series)