Spiro Agnew was accused of taking bribes and forced to resign as Vice President of the United States. The charges stemmed from corrupt activity as a public official in Maryland.
Guid books because they didn't have anyone to hand them the books and also people don't waste their time on books they are out there for gold
Sources are used in a paper to show what ideas inspired you and whose theories you would be using and you cite the sources in order to avoid plagiarism. If you don't have sources, your paper will not be valid and you could get accused of plagiarism. The more sources you use the better but you should keep in mind that they need to be important for the paper and used with a purpose and not just to increase the number of sources.