United States. Library of Congress. (1988). Library of Congress classification schedules combined with additions and changes through 1987 Class Z: Bibliography and Library Science. Gale.
Цитирование в стиле Чикаго (17-е изд.)United States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1987 Class Z: Bibliography and Library Science. Detroit: Gale, 1988.
Цитирование MLA (9-е изд.)United States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1987 Class Z: Bibliography and Library Science. Gale, 1988.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.