Concise AACR2:  21. Introduction

Use rules 23–29 to decide the access points (name headings and/or titles) that are to be added to the bibliographic description (see rules 0–11) so that the description can be added to, and retrieved from, a catalogue.

Use rules 23–28 to decide which access point is the heading for the main entry (other access points being headings for added entries). If, however, your library does not distinguish between main entries and added entries, treat all access points as equal and use rules 23–29 to tell you which and how many access points to make.

Generally, each rule and its example(s) only cover certain added–entry access points. Additional added–entry access points (for example, series and title headings) may be required by the general rule on added entries (see rule 29).

Prefer the chief source of information (see rule 0A) to other sources, but also take into account any relevant information found elsewhere on the bibliographic resource and, when necessary, in accompanying material and reference sources.

The examples in rules 24–29 indicate only the access points to be made without showing their complete form. Use rules 30–61 to establish the complete from.

When an example is followed by Main entry under title or Added entry under title, it usually means the title proper (see rule 1B). In a few cases it may mean the uniform title (see rules 57–61).