@book{211540,
	author = {Library of Congress.},
	title = {MARC 21 format for holdings data},
	publisher = {Library of Congress, Cataloging Distribution Service},
	year = {c2000-},
	address = {Washington},
	edition = {2000 ed.},
	note = {Second publisher varies: National Library of Canada, 2000-<2001>},
	url = {http://purl.access.gpo.gov/GPO/LPS5152}
}