Cita APA (7a ed.)

Greenspan, S. I., & Pollock, G. H. (1993). Late adulthood. International Universities Press.

Cita Chicago Style (17a ed.)

Greenspan, Stanley I., y George H. Pollock. Late Adulthood. Madison, Connecticut: International Universities Press, 1993.

Cita MLA (9a ed.)

Greenspan, Stanley I., y George H. Pollock. Late Adulthood. International Universities Press, 1993.