Trattner, Walter I.
From poor law to welfare state : a history of social welfare in american
Free Press, 1984
 Buku Teks
Trattner, Walter I.
From poor law to welfare state : a history of social welfare in american
Free Press, 1979
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Grijp, Paul van der
Islanders of the south : production, kinship and ideology in the Polynesian kingdom of Tonga
KITLV Press, 1993
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Decentralizing the civil service : from unitary state to differentiated polity in the United Kingdom
R. A. W. Rhodes [and others]
Open University press, 2003
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Quinn, Arthur Hobson
A history of the American drama, from the beginning to the Civil War
Irvington Publishers, 1943
 Buku Teks SO