Dyfyniad APA
COSTELLO, A. (1987). ASSESSMENT AND DIAGNOSIS OF AFFECTIVE DISORDERS IN CHILDREN.
Dyfyniad Arddull Chicago
COSTELLO, A.J. ASSESSMENT AND DIAGNOSIS OF AFFECTIVE DISORDERS IN CHILDREN. 1987.
Dyfyniad MLA
COSTELLO, A.J. ASSESSMENT AND DIAGNOSIS OF AFFECTIVE DISORDERS IN CHILDREN. 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.