APA
Library of Congress, . (1987). Annual report of the Librarian of Congress, 1986. Washington D. C: .
Chicago
Library of Congress, . 1987. Annual report of the Librarian of Congress, 1986. Washington D. C: .
Harvard
Library of Congress, . (1987). Annual report of the Librarian of Congress, 1986. Washington D. C: .
MLA
Library of Congress, . Annual report of the Librarian of Congress, 1986. Washington D. C: . 1987.
