Cita APA (7th ed.)

(1955). Reader´s digest condensed books: Springs 1955 selections. Volume 21. The Reader´s Digest.

Cita Chicago (17th ed.)

Reader´s Digest Condensed Books: Springs 1955 Selections. Volume 21. New York, Estados Unidos: The Reader´s Digest, 1955.

Cita MLA (9th ed.)

Reader´s Digest Condensed Books: Springs 1955 Selections. Volume 21. The Reader´s Digest, 1955.