Party fund-raising is a scandalous source of corruption.
A further source of corruption, according to the report, is "shadowy outside spending".
The 'Ndrangheta understood that family itself could be a source of corruption.
In Argentina, 58% of respondents singled out political parties as a prime source of corruption.
These are a big source of corruption: some businesses get two or three inspections daily.
"The biggest source of corruption in Afghanistan," one American official said, "was the United States".
Humans are both the victims and source of corruption in this novel.
In the government sector, procurement is sometimes the source of corruption, scandal and abuse of public resources.
Another source of corruption is the illegal drugs trade, which grew seven-fold from 2002 to 2014.
Some regard the decentralisation of power towards regional governments without independent administrative controls as a major source of corruption.
This month government ministries shot down an attempt to reform the licensing of businesses, a notorious source of corruption.
