Andrew Davis; Garrett Nagle. (2017). Environmental Systems and Societies IB Diploma Study Revision Gui: Second edition (2nd.). Hodder Education.
Cita Chicago (17th ed.)Andrew Davis; Garrett Nagle. Environmental Systems and Societies IB Diploma Study Revision Gui: Second Edition. 2nd. Hodder Education, 2017.
Cita MLA (9th ed.)Andrew Davis; Garrett Nagle. Environmental Systems and Societies IB Diploma Study Revision Gui: Second Edition. 2nd. Hodder Education, 2017.
Atenció: Aquestes cites poden no estar 100% correctes.