Cita APA (7a ed.)

Bragdon, L. J., & Chapman, F. T. (1959). Luther Burbank: Nature's helper. Abingdon.

Cita Chicago Style (17a ed.)

Bragdon, Lillian J., y Frederick T. Chapman. Luther Burbank: Nature's Helper. New York [etc.]: Abingdon, 1959.

Cita MLA (9a ed.)

Bragdon, Lillian J., y Frederick T. Chapman. Luther Burbank: Nature's Helper. Abingdon, 1959.