U.S. Library of Congress. Subject Cataloging Division, Gale Research Inc, Runchock, R., & Droste, K. (1989). Class C. Auxiliary sciences of history: Library of Congress classification schedules combined with additions and changes through 1988. Gale Research Inc.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিU.S. Library of Congress. Subject Cataloging Division, Gale Research Inc, Rita Runchock, এবং Kathleen Droste. Class C. Auxiliary Sciences of History: Library of Congress Classification Schedules Combined with Additions and Changes Through 1988. Detroit, Michigan: Gale Research Inc, 1989.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিU.S. Library of Congress. Subject Cataloging Division, et al. Class C. Auxiliary Sciences of History: Library of Congress Classification Schedules Combined with Additions and Changes Through 1988. Gale Research Inc, 1989.