Cita APA (7a ed.)

Library of Congress. & Schwegmann, G. A. (1967). Newspapers on microfilm (6th ed.). Library of Congress.

Cita Chicago Style (17a ed.)

Library of Congress. y George A. Schwegmann. Newspapers on Microfilm. 6th ed. Washington: Library of Congress, 1967.

Cita MLA (9a ed.)

Library of Congress. y George A. Schwegmann. Newspapers on Microfilm. 6th ed. Library of Congress, 1967.