Bibliographic description of rare books :
rules formulated under AACR 2 and ISBD(A) for the descriptive cataloging of rare books and other special printed materials /
Office for Descriptive Cataloging Policy, Processing Services.

APA Citation

Library of Congress. Office for Descriptive Cataloging Policy. (1981). Bibliographic description of rare books: rules formulated under AACR 2 and ISBD(A) for the descriptive cataloging of rare books and other special printed materials. Washington: Library of Congress.

MLA Citation

Library of Congress. Office for Descriptive Cataloging Policy. Bibliographic Description of Rare Books: Rules Formulated Under AACR 2 And ISBD(A) for the Descriptive Cataloging of Rare Books And Other Special Printed Materials. Washington: Library of Congress, 1981.

Warning: These citations may not always be complete (especially for serials).