APA (7th ed.) Citation

U. S. Library of Congress. Subject Cataloging Division, Gale Research Company, Library of Congress. Subject Cataloging Division, & Savage, H. (1973). Library of Congress Classification schedules, a cumulation of additions and changes, 1971-1972. Class J. Political science. Gale Research Company.

Chicago Style (17th ed.) Citation

U. S. Library of Congress. Subject Cataloging Division, Gale Research Company, Library of Congress. Subject Cataloging Division, and Helen Savage. Library of Congress Classification Schedules, a Cumulation of Additions and Changes, 1971-1972. Class J. Political Science. Detroit, Michigan: Gale Research Company, 1973.

MLA (9th ed.) Citation

U. S. Library of Congress. Subject Cataloging Division, et al. Library of Congress Classification Schedules, a Cumulation of Additions and Changes, 1971-1972. Class J. Political Science. Gale Research Company, 1973.