You should evaluate each book that you consult during your library research in order to ascertain if you should use this work in your research. Consider issues such as:

• Is the book relevant to my research? For example, check the content is within the scope of your research.
• Is the book from an authoritative source? For example, ensure the author is an expert in the field or the book is produced by a reputable organisation.
• Is the book accurate? For example, check that the arguments are supported with independent evidence.
• Is the book still current? For example, consider the date of publication, check that it is the latest edition and that it considers any important recent developments.