Cita APA (7a ed.)

Library of Congress. (1924). Classification: Class J Political science (2nd ed.). Library of Congress.

Cita Chicago Style (17a ed.)

Library of Congress. Classification: Class J Political Science. 2nd ed. Washington: Library of Congress, 1924.

Cita MLA (9a ed.)

Library of Congress. Classification: Class J Political Science. 2nd ed. Library of Congress, 1924.