Dyfyniad APA

(1999). Chronic and recurrent pain in children and adolescents. Seattle: Island Press.

Dyfyniad Arddull Chicago

Chronic and Recurrent Pain in Children and Adolescents. Seattle: Island Press, 1999.

Dyfyniad MLA

Chronic and Recurrent Pain in Children and Adolescents. Seattle: Island Press, 1999.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.