Cita APA (7a ed.)

Waite, H. E. (1959). Valiant companions: Helen Keller and Anne Sullivan Macy. Macrae Smith.

Cita Chicago Style (17a ed.)

Waite, Helen Elmira. Valiant Companions: Helen Keller and Anne Sullivan Macy. Philadelphia: Macrae Smith, 1959.

Cita MLA (9a ed.)

Waite, Helen Elmira. Valiant Companions: Helen Keller and Anne Sullivan Macy. Macrae Smith, 1959.