United States. Library of Congress. (1988). Library of Congress classification schedules combined with additions and changes through 1987 Class R: Medicine. Gale.
Chicago Style (17th ed.) CitationUnited States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1987 Class R: Medicine. Detroit: Gale, 1988.
MLA (9th ed.) CitationUnited States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1987 Class R: Medicine. Gale, 1988.
Warning: These citations may not always be 100% accurate.