Cita APA (7a ed.)

Keller, H., & Pollak-Ottendorff, E. (1956). The story of my life. Houghton Mifflin.

Cita Chicago Style (17a ed.)

Keller, Helen, y Eleonore Pollak-Ottendorff. The Story of My Life. Boston: Houghton Mifflin, 1956.

Cita MLA (9a ed.)

Keller, Helen, y Eleonore Pollak-Ottendorff. The Story of My Life. Houghton Mifflin, 1956.