APA (7th ed.) Citation

Library of Congress. Subject Cataloging Division & Savage, H. (1983). Library of Congress Classification schedules, a cumulation of additions and changes through 1981, Class Q: Science. Gale Research Co.

Chicago Style (17th ed.) Citation

Library of Congress. Subject Cataloging Division and Helen Savage. Library of Congress Classification Schedules, a Cumulation of Additions and Changes Through 1981, Class Q: Science. Detroit, Mich: Gale Research Co, 1983.

MLA (9th ed.) Citation

Library of Congress. Subject Cataloging Division and Helen Savage. Library of Congress Classification Schedules, a Cumulation of Additions and Changes Through 1981, Class Q: Science. Gale Research Co, 1983.