United States. Library of Congress. (1988). Library of Congress classification schedules combined with additions and changes through 1987 Class R: Medicine. Gale.
Citação norma ChicagoUnited States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1987 Class R: Medicine. Detroit: Gale, 1988.
Citação norma MLAUnited States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1987 Class R: Medicine. Gale, 1988.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.