Cita APA

United States. Library of Congress, Savage, H., Droste, K. D., & Runshock, R. (1987). Library of Congress classification schedules combined with additions and changes through 1986 Class A: General works. Gale Research Inc.

Citación estilo Chicago

United States. Library of Congress, Helen Savage, Kathleen D. Droste, and Rita Runshock. Library of Congress Classification Schedules Combined with Additions and Changes Through 1986 Class A: General Works. Detroit: Gale Research Inc, 1987.

Cita MLA

United States. Library of Congress, et al. Library of Congress Classification Schedules Combined with Additions and Changes Through 1986 Class A: General Works. Gale Research Inc, 1987.