Ôl troed carbon: Gwahaniaeth rhwng fersiynau

Cynnwys wedi'i ddileu Cynnwys wedi'i ychwanegu
man gywiriadau, replaced: Ffynonell → ffynhonnell using AWB
B →‎ffynonellau: ffynhonnellau i ffynonellau, replaced: ffynhonnellau → ffynonellau using AWB
Llinell 4:
<references/>
 
== ffynhonnellauffynonellau ==
*{{eicon en}} Parliamentary Office of Science and Technology POST (2006). ''Carbon footprint of electricity generation''. Hydref 2006, Rhif 268
*{{eicon en}} [https://www.novapublishers.com/catalog/product_info.php?products_id=5999 Wiedmann, T. a J. Minx (2008). ''A Definition of 'Carbon Footprint'. Ecological Economics Research Trends.'' C. C. Pertsova: Chapter 1, pp. 1-11. Nova Science Publishers, Inc, Hauppauge, Efrog Newydd, yr Unol Daleithiau], [http://www.isa-research.co.uk/reports.html hefyd ar gael yma].