Library of Congress. Subject Cataloging Division, Gale Research Inc, Droste, K., & Runchock, R. Class A. General works: Library of Congress classification schedules combined with additions and changes through 1989.
Chicago Style (17th ed.) CitationLibrary of Congress. Subject Cataloging Division, Gale Research Inc, Kathleen Droste, and Rita Runchock. Class A. General Works: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989.
MLA (9th ed.) CitationLibrary of Congress. Subject Cataloging Division, et al. Class A. General Works: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989.
Warning: These citations may not always be 100% accurate.