Schilling Robert,. Commentary: The challenge of nonexperimental interventions studies in social work.
Chicago-стиль цитированияSchilling Robert,. Commentary: The Challenge of Nonexperimental Interventions Studies in Social Work.
MLA-цитированиеSchilling Robert,. Commentary: The Challenge of Nonexperimental Interventions Studies in Social Work.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.