United States. Library of Congress. (1990). Library of Congress classification schedules combined with additions and changes through 1989: Class K subclasses KDZ, KG-KH law of the Americas, Latin America, and the West Indies. Gale Research.
Chicago Style aipamenaUnited States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: Class K Subclasses KDZ, KG-KH Law of the Americas, Latin America, and the West Indies. Detroit: Gale Research, 1990.
MLA aipamenaUnited States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: Class K Subclasses KDZ, KG-KH Law of the Americas, Latin America, and the West Indies. Gale Research, 1990.