Library of Congress classification schedules, a cumulation of additions and changes ... : Class A, general works.
APA Citation
Gale Research Company., Library of Congress. Subject Cataloging Division. (1974). Library of Congress classification schedules, a cumulation of additions and changes ... : Class A, general works. Detroit: Gale Research Co..
MLA Citation
Gale Research Company, and Library of Congress. Subject Cataloging Division. Library of Congress Classification Schedules, a Cumulation of Additions And Changes ... : Class A, General Works. Detroit: Gale Research Co., 1974.
Warning: These citations may not always be complete (especially for serials).