Conducting a comprehensive literature review is an essential part of any research project. To ensure that the review is thorough and accurate, it is important to consider a variety of sources, including books, journal articles, reports, government documents, conference proceedings, and web resources. Additionally, Boolean operators can be used to help narrow down the search. When it comes to peer-reviewed journal articles, these are considered the primary source of research due to the rigorous review process they have undergone.
Other websites can also be used as a source of statistics that may be needed for the literature review. The author can then discuss the merits of each article and provide analysis and comparison of the importance of each article with other similar ones. It is important to note that books tend to be less up to date than magazine articles, as it takes longer to publish a book. In a postgraduate research thesis, the focus of a literature review is to identify gaps and argue for the need for further research.