Concise AACR2: 50.VARIANT NAMES

50A.Language

If the body's name appears in different languages, use the form in the official language of the body.

If there is no official English form, use:

either the form in a language familiar to the users of your catalogue or if the body's name is in a language unfamiliar to the users of your catalogue, a documented translation of the name into English.

50B.Governments

Use the conventional English name of a government⁶ as the heading. The conventional name is the geographic name (see rules 45–47) of the area over which the government has jurisdiction.

50C.Other variant names

50C1.

If, in the same period of time,a body uses different names in bibliographic resources issued by it, use the name that appears in chief sources of information (see rule 0A) rather than forms found elsewhere.

50C2.

If different forms appear in the chief sources of information, use (in this order of preference):

the form not linked to other words in the chief source
the predominant form
the brief form
the later or latest from.

6. Government, as used in these rules, means any body (national, federal, regional, or local) that has jurisdiction over a particular area: country, state, province, county, city, municipality, etc.