Citação norma APA

U.S. Library of Congress. Subject Cataloging Division, Gale Research Inc, Runchock, R., & Droste, K. (1989). Class R. Medicine: Library of Congress classification schedules combined with additions and changes through 1988. Gale Research Inc.

Citação norma Chicago

U.S. Library of Congress. Subject Cataloging Division, Gale Research Inc, Rita Runchock, and Kathleen Droste. Class R. Medicine: Library of Congress Classification Schedules Combined with Additions and Changes Through 1988. Detroit, Michigan: Gale Research Inc, 1989.

Citação norma MLA

U.S. Library of Congress. Subject Cataloging Division, et al. Class R. Medicine: Library of Congress Classification Schedules Combined with Additions and Changes Through 1988. Gale Research Inc, 1989.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.