Parrott, L., Parker, J., & Bradley, G. (2006). Values and ethics in social work practice. Learning Matters.
Lua i Stíl Chicago (17ú heag.)Parrott, Lester, Jonathan Parker, agus Greta Bradley. Values and Ethics in Social Work Practice. Exeter: Learning Matters, 2006.
Lua MLA (9ú heag.)Parrott, Lester, et al. Values and Ethics in Social Work Practice. Learning Matters, 2006.
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