Boyle, S. W. (2006). Direct practice in social work. Pearson/Allyn & Bacon.
Lua i Stíl Chicago (17ú heag.)Boyle, Scott W. Direct Practice in Social Work. Boston: Pearson/Allyn & Bacon, 2006.
Lua MLA (9ú heag.)Boyle, Scott W. Direct Practice in Social Work. Pearson/Allyn & Bacon, 2006.
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