Hepworth, D. H. (1989). Direct social work practice: Theory and skills (3rd ed.). Wadsworth.
芝加哥风格引文Hepworth, Dean H. Direct Social Work Practice: Theory and Skills. 3rd ed. California: Wadsworth, 1989.
MLA引文Hepworth, Dean H. Direct Social Work Practice: Theory and Skills. 3rd ed. Wadsworth, 1989.
警告：这些引文格式不一定是100％准确.