(1980). Diagnostic and statistical manual of mental disorders (3rd ed.). American psychiatry association.
Dyfyniad Arddull ChicagoDiagnostic and Statistical Manual of Mental Disorders. 3rd ed. Washington D.C.: American psychiatry association, 1980.
Dyfyniad MLADiagnostic and Statistical Manual of Mental Disorders. 3rd ed. American psychiatry association, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.