There are many styles and forms used to cite sources used to support research.
Most academic institutions have standardized requirements for their students.
Three of the most widely used styles of citation have been described in this document. They have also formulated guidelines for citing electronic sources. The bibliography, found at the end of the text, is called references. The APA method does not use endnotes or footnotes, but instead uses parenthetical citations. An alphabetical list of books and other sources used in writing a work.