May headings found on web sites or in CIP cataloging of national libraries (e.g., Australia, Brazil) be used as the authorized form?
It depends. Headings found on web sites or in CIP information from national libraries (other than NLC) may be used as long as the heading structure fits into the current policies and practices of AACR2, the LCRIs and the DCM Z1 procedures for NACO contribution. Many national libraries use AACR2, but may not apply the LCRIs or the DCM Z1 procedures in the formulation of their headings. It is important to examine the headings carefully before using these exactly as given. Information for fuller forms of names, dates, etc. may be used to formulate the heading in conjunction with the information on the chief source, etc. as per usual.
