Cita APA (7a ed.)

Allen, E., & Cowdry, E. V. (1942). Problems of ageing: Biological and medical aspects. Williams & Wilkins.

Cita Chicago Style (17a ed.)

Allen, Edgar, y E. V. Cowdry. Problems of Ageing: Biological and Medical Aspects. Baltimore: Williams & Wilkins, 1942.

Cita MLA (9a ed.)

Allen, Edgar, y E. V. Cowdry. Problems of Ageing: Biological and Medical Aspects. Williams & Wilkins, 1942.