United States. Library of Congress. (1990). Library of Congress classification schedules combined with additions and changes through 1989: Class U military science. Gale Research.
Цитирование в стиле Чикаго (17-е изд.)United States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: Class U Military Science. Detroit: Gale Research, 1990.
Цитирование MLA (9-е изд.)United States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: Class U Military Science. Gale Research, 1990.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.