George, C. (2013). Developments in Regional Trade Agreements and the Environment: 2012 Update. OECD Publishing. https://doi.org/10.1787/5k43m4nxwm25-en
Chicago-Zitierstil (17. Ausg.)George, Clive. Developments in Regional Trade Agreements and the Environment: 2012 Update. Paris: OECD Publishing, 2013. https://doi.org/10.1787/5k43m4nxwm25-en.
MLA-Zitierstil (9. Ausg.)George, Clive. Developments in Regional Trade Agreements and the Environment: 2012 Update. OECD Publishing, 2013. https://doi.org/10.1787/5k43m4nxwm25-en.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.