Cita APA (7th ed.)
VARIOS AUTORES. (2000). THE PRINCIPLES OF THE NATIONAL FRAMEWORK ON AGING: A POLICY GUIDE. INTERNATIONAL YEAR OF OLDER PERSONS 1999.
Cita Chicago (17th ed.)
VARIOS AUTORES. THE PRINCIPLES OF THE NATIONAL FRAMEWORK ON AGING: A POLICY GUIDE. [s.l.]: INTERNATIONAL YEAR OF OLDER PERSONS 1999, 2000.
Cita MLA (9th ed.)
VARIOS AUTORES. THE PRINCIPLES OF THE NATIONAL FRAMEWORK ON AGING: A POLICY GUIDE. INTERNATIONAL YEAR OF OLDER PERSONS 1999, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.