@inbook{publication-1771,
	address={New York},
	author={Frey, Bruno S and Stutzer, Alois},
	booktitle={The cambridge handbook of psychology and economic behaviour},
	editor={Lewis, Alan},
	isbn={978-0-521-85665-2},
	pages={406-428},
	publisher={Cambridge University Press},
	title={Environmental morale and motivation},
	year=2008,
}