What makes a source good to add as a reference in Wikipedia?
Read more at the Wikipedia guideline Identifying reliable sources and identifying independent sources (no vested interest in a given Wikipedia topic and therefore is commonly expected to cover the topic from a disinterested perspective):
Good sources are reliable, independent, and speak to notability. Books, major newspapers, magazines and academic journals are reputable and not likely to be disputed by other editors. Blogs and other self-published material can be used, but may be considered less reliable. Avoid using these as your only sources.
Reference books, whether in paper or online, can give background and depth, as well as definitions, basic knowledge, scope of the topic area, important people and statistics, and some citations to get you started.
To find books, eBooks, videos and other materials that LMU owns or subscribes to.
*Please note it can take up to three weeks for a book requested through ILLiad to arrive at LMU.