APA-ийн эшлэл(7 дахь хэвлэлт)

Hepworth, D. H. (1989). Direct social work practice: Theory and skills (3rd ed.). Wadsworth.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Hepworth, Dean H. Direct Social Work Practice: Theory and Skills. 3rd ed. California: Wadsworth, 1989.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Hepworth, Dean H. Direct Social Work Practice: Theory and Skills. 3rd ed. Wadsworth, 1989.