APA-viite (7. p.)
Barr, S. (2008). Environment and society: Sustainability, policy and the citizen. Ashgate.
Chicago-viite (17. p.)
Barr, Stewart. Environment and Society: Sustainability, Policy and the Citizen. Aldershot, England ; Burlington, VT: Ashgate, 2008.
MLA-viite (9. p.)
Barr, Stewart. Environment and Society: Sustainability, Policy and the Citizen. Ashgate, 2008.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.