Cita APA (7a ed.)

SPENCE, A. P. (1999). Biology of human aging.-- Ed. 2. Prentice Hall.

Cita Chicago Style (17a ed.)

SPENCE, Alaxander P. Biology of Human Aging.-- Ed. 2. New Jersey: Prentice Hall, 1999.

Cita MLA (9a ed.)

SPENCE, Alaxander P. Biology of Human Aging.-- Ed. 2. Prentice Hall, 1999.