524 Preferred Citation of Described Materials Note

Field definition and scope:

Field 524 contains the format for the citation of the described materials that is preferred by the custodian. When multiple citation formats exist for the same item, each is recorded in a separate occurrence of field 524.

The note is sometimes displayed and/or printed with an introductory phrase that is generated as a display constant based on the first indicator value.

The National level record requirement for this field is Optional.

Field 524 is repeatable.

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, National-level (NLR) and Minimal-level (MLR) record requirements, and designator repeatability, see table below:

Position	Description	NLR	MLR	Repeatability
Field 524	Preferred Citation of Described Materials Note	O	O	R
Indicator:
First	Display constant controller	M
#	Cite as	A
8	No display constant generated	A

Second	Undefined; contains a blank	M

Subfield code:
$a	Preferred citation of described materials note	M	O	NR
$2	Source of schema used	A	O	NR
$3	Materials specified	O	O	NR
$6	Linkage	A	O	NR
$8	Field link and sequence number	O	O	R

Input conventions:

Punctuation

Display constant