Graves, P. E. (2014). Environmental economics: An integrated approach. CRC Press.
Chicago-viite (17. p.)Graves, Philip E. Environmental Economics: An Integrated Approach. London: CRC Press, 2014.
MLA-viite (9. p.)Graves, Philip E. Environmental Economics: An Integrated Approach. CRC Press, 2014.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.