Cita APA (7a ed.)

Chown, S. M. (1972). Human ageing. Penguin Books.

Cita Chicago Style (17a ed.)

Chown, Sheila M. Human Ageing. Middlesex: Penguin Books, 1972.

Cita MLA (9a ed.)

Chown, Sheila M. Human Ageing. Penguin Books, 1972.