APA (7th ed.) Citation

Foster, J. (1997). Valuing nature?: Ethics, economics and the environment. Routledge.

Chicago Style (17th ed.) Citation

Foster, John. Valuing Nature?: Ethics, Economics and the Environment. London ; New York: Routledge, 1997.

MLA (9th ed.) Citation

Foster, John. Valuing Nature?: Ethics, Economics and the Environment. Routledge, 1997.