Hall, M. P., & Forder, A. Penelope Hall's social services of England and Wales. Routledge & K. Paul, c1969.
Lua i Stíl Chicago (17ú heag.)Hall, Mary Penelope, agus Anthony Forder. Penelope Hall's Social Services of England and Wales. London: Routledge & K. Paul, c1969.
Lua MLA (9ú heag.)Hall, Mary Penelope, agus Anthony Forder. Penelope Hall's Social Services of England and Wales. Routledge & K. Paul, c1969.
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