These two authors are already well-known for their joint contributions on ethics in ecotourism, and this text expands on that work. Somewhat confusingly, there is a companion volume by David Fennell, published in the same series in 2006, with the title Tourism Ethics. In the present volume there is a page and a half under that more general heading (pp. 27-28), which suggests that there are only about 15 previous publications on this topic. This volume has a narrower scope, focussing on written codes.