Australian Competition and ConsumerA.C.C.CommissionAustralian Competition and ConsumerA.C.C., ACCC update on VW enforcement investigation [online], Australian Competition and Consumer Commission, 1 października 2015 [dostęp 2016-02-23].
Food and Rural Affairs (Defra) webmaster@defra gsi gov uk Department forF.R.A.(D.) @D.EnvironmentFood and Rural Affairs (Defra) webmaster@defra gsi gov uk Department forF.R.A.(D.) @D., Air Pollution in the UK report – Defra, UK [online] [dostęp 2016-01-23].