Journal articles are cited as follows:

1.   Neuhaus, J.-M., Sitcher, L., Meins, F., Jr., & Boller, T. (1991) Proc.
      Natl. Acad. Sci. USA 88, 10362-10366.
 
For correct abbreviations of journal titles, refer to Chemical Abstracts Service Source Index (CASSI).

Articles or chapters in books are cited as follows:

2.   Hill, A. V. S. (1991) in Molecular Evolution of the Major Histocompatibility
      Complex, eds. Klein, J. & Klein, D. (Springer, Heidelberg), pp. 403-420.