Cita APA

Poon, L. W. (1980). Aging in the 1980s: Psychological issues. Washington, D.C.: American Psychological Association.

Citación estilo Chicago

Poon, Leonard W.. Aging in the 1980s: Psychological Issues. Washington, D.C.: American Psychological Association, 1980.

Cita MLA

Poon, Leonard W.. Aging in the 1980s: Psychological Issues. Washington, D.C.: American Psychological Association, 1980.

Precaución: Estas citas no son 100% exactas.