United States. Library of Congress. (1990). Library of Congress classification schedules combined with additions and changes through 1989: Class P, subclass PG (in part) Russian literature. Gale Research.
Chicago Style (17th ed.) CitationUnited States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: Class P, Subclass PG (in Part) Russian Literature. Detroit: Gale Research, 1990.
MLA (9th ed.) CitationUnited States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: Class P, Subclass PG (in Part) Russian Literature. Gale Research, 1990.
Warning: These citations may not always be 100% accurate.