Give credit whenever you use:
- another person's idea, opinion,
or theory
- any facts, statistics, graphs,
drawings, photographs -- any pieces of information -- that are not common knowledge
- quotations of another person's
actual spoken or written words
- a paraphrase of another person's
spoken or written words
The only time you do not have to give
credit to source material is when it provides you with ‘common knowledge’
facts.