APA
LIBRARY OF CONGRESS, LIBRARY OF CONGRESS, . (1977). Annual report. Washington: Library of Congress.
Chicago
LIBRARY OF CONGRESS, LIBRARY OF CONGRESS, . 1977. Annual report. Washington: Library of Congress.
Harvard
LIBRARY OF CONGRESS, LIBRARY OF CONGRESS, . (1977). Annual report. Washington: Library of Congress.
MLA
LIBRARY OF CONGRESS, LIBRARY OF CONGRESS, . Annual report. Washington: Library of Congress. 1977.
