United States. Library of Congress. (1990). Library of Congress classification schedules combined with additions and changes through 1989: Class K subclass KD Law of the United Kingdom and Ireland. Gale Research.
Cita Chicago (17th ed.)United States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: Class K Subclass KD Law of the United Kingdom and Ireland. Detroit: Gale Research, 1990.
Cita MLA (9th ed.)United States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: Class K Subclass KD Law of the United Kingdom and Ireland. Gale Research, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.