Dyfyniad APA

Jonathan Parker & Mark Doel. (2013). Professional social work. Sage.

Dyfyniad Arddull Chicago

Jonathan Parker and Mark Doel. Professional Social Work. London: Sage, 2013.

Dyfyniad MLA

Jonathan Parker and Mark Doel. Professional Social Work. Sage, 2013.

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