The differences often break down along disciplinary lines. For example, the author-date format is frequently preferred by researchers in the physical, natural, and social sciences, while the notes and bibliography approach finds favor among researchers in literary, historical, and artistic fields. Other factors may also influence a scholar's decision to choose one format over another: for example, if a researcher elects to forgo a bibliography, either by choice or due to space limitations imposed by the publisher, she may instead adopt the Chicago note format (either endnotes or footnotes) independent of a bibliography. In such a situation, full citation information would be included in the notes. The different versions of the system are illustrated here:

in-text documentation: (Jenkins 2006)
bibliographic entry: Jenkins, Henry. 2006. Convergence Culture: Where Old and New Media Collide. New York: NYU Press.

Jenkins, Henry. Convergence Culture: Where Old and New Media Collide. New York: NYU Press, 2006.

Henry Jenkins, Convergence Culture: Where Old and New Media Collide (New York: NYU Press, 2006), 56.

Jenkins, Convergence Culture, 56.