Ryan, M. (2016). Human value, environmental ethics, and sustainability: The precautionary ecosystem health principle. Rowman & Littlefield International.
Chicago-Zitierstil (17. Ausg.)Ryan, Mark. Human Value, Environmental Ethics, and Sustainability: The Precautionary Ecosystem Health Principle. London ; New York: Rowman & Littlefield International, 2016.
MLA-Zitierstil (9. Ausg.)Ryan, Mark. Human Value, Environmental Ethics, and Sustainability: The Precautionary Ecosystem Health Principle. Rowman & Littlefield International, 2016.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.