Cita APA (7th ed.)
Dowd, J. J. (1980). Stratification among the aged. Brooks/ Cole.
Cita Chicago (17th ed.)
Dowd, James J. Stratification Among the Aged. California: Brooks/ Cole, 1980.
Cita MLA (9th ed.)
Dowd, James J. Stratification Among the Aged. Brooks/ Cole, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.