Cita APA (7th ed.)
ALLEN, D., & ALLEN, V. (1979). ETHICAL ISSUES IN MENTAL RETARDATION. TRAGIC CHOICES. LIVING HOPE. ABINGDON.
Cita Chicago (17th ed.)
ALLEN, D.F, i V.S ALLEN. ETHICAL ISSUES IN MENTAL RETARDATION. TRAGIC CHOICES. LIVING HOPE. NASHVILLE,TN: ABINGDON, 1979.
Cita MLA (9th ed.)
ALLEN, D.F, i V.S ALLEN. ETHICAL ISSUES IN MENTAL RETARDATION. TRAGIC CHOICES. LIVING HOPE. ABINGDON, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.