| title | ISBN-13 | year of publication |
|---|---|---|
| A Theory of Value and Obligation | 978-0-367-86332-6 | 2020 |
| A Theory of Value and Obligation | 978-0-7099-0572-1 | 1987 |
| Environmental Ethics | 978-0-7456-2738-0 | 2003 |
| Environmental Ethics: A Very Short Introduction | 978-0-19-879716-6 | 2018 |
| Ethics: An Overview | 978-1-4411-8205-0 | 2012 |
| Ethics of the Global Environment | 978-1-55753-189-6 | 1999 |
| International Justice and the Third World: Studies in the Philosophy of Development | 978-1-138-41692-5 | 2017 |
| Philosophy & Natural Environment | 978-0-521-46903-6 | 2008 |
| The Ethics of Environmental Concern | 978-0-8203-1344-3 | 1991 |
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