Cita APA (7th ed.)
Drew, C. (1992). Mental retardation: A life cycle approach (5th.ed.). Macmillan.
Cita Chicago (17th ed.)
Drew, Clifford. Mental Retardation: A Life Cycle Approach. 5th.ed. New York: Macmillan, 1992.
Cita MLA (9th ed.)
Drew, Clifford. Mental Retardation: A Life Cycle Approach. 5th.ed. Macmillan, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.