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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited 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.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnited 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.