Gaya APA
Woodruff, D, S., Birren, J, E. (1975).
Aging ; Scientific Perspectives And Social Issues (2).
California:
Brooks/Cole Publishing Company.
Gaya MLA
Woodruff, Diana, S., Birren, James, E.
"Aging ; Scientific Perspectives And Social Issues".
2
California:
Brooks/Cole Publishing Company,
1975.
Text.