Cita APA

Keller, H. R., & Keller, H. R. (1936). The reader's digest of books (new and greatly enl. edition.). New York, New York: Macmillan.

Citación estilo Chicago

Keller, Helen Rex, y Helen Rex Keller. The Reader's Digest of Books. new and greatly enl. edition. New York, New York: Macmillan, 1936.

Cita MLA

Keller, Helen Rex, y Helen Rex Keller. The Reader's Digest of Books. new and greatly enl. edition. New York, New York: Macmillan, 1936.