Gaya APA
Selby, P., Schecher, M. (1982).
Aging 2000 a Challenge for Society .
Lancaster:
Sandoz Institute for Health and Socio-Economic Studies.
Gaya MLA
Selby, Philip., Schecher, Mal.
"Aging 2000 a Challenge for Society".
Lancaster:
Sandoz Institute for Health and Socio-Economic Studies,
1982.
print.