If, in the case of a work by two or three
persons or bodies, no one person or body is clearly principally
responsible (see rule
25B), enter under the heading for the one named
first. Make added entries under the headings for the others.
If, in the case of a work by four or more
persons or bodies, none of the persons or bodies is clearly
principally responsible (see rule
25B), enter under the title. Make an
added entry under the heading for the first person or body named in
the chief source of information.
