3.2.1 Peer review
It is crucial that most of your literature should come from peer-reviewed materials, such as journal articles. The point of peer reviewing is to increase quality by ensuring that the ideas presented seem well founded to other experts in the topic. Conference papers are generally peer reviewed, although the review process is usually less stringent, and so the standing of conference papers is not the same as for journals. Books, magazines, newspapers and websites (including blogs, wikis, corporate sites, etc.) are not subject to peer review, and you should treat them with appropriate caution. Also, treat each publication on its merits; it is more helpful to use a good conference paper than a poor journal paper. Similarly, it is acceptable to refer to a well-written blog by a knowledgeable and well-known author provided that you supply appropriate context. In all these cases, the important thing is that you interpret the work correctly.