Foster, J. (1997). Valuing nature?: Ethics, economics and the environment. Routledge.
Chicago Edition CitationFoster, John. Valuing Nature?: Ethics, Economics and the Environment. London ; New York: Routledge, 1997.
MLA引文Foster, John. Valuing Nature?: Ethics, Economics and the Environment. Routledge, 1997.
警告:這些引文格式不一定是100%准確.