The economics of poverty : an American paradox
edited by Burton A. Weisbrod
Prentice-Hall, 1965
 Buku Teks
The economics of poverty : an American paradox
edited by Burton A. Weisbrod
Prentice-Hall, 1965
 Buku Teks
Wilcox, Walter W.
Economics of American agriculture
Prentice-Hall, 1951
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Alderfer, E.B.
Economics of American industry
McGraw-Hill, 1950
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Ranney, Austin
Democracy and the American party system
Harcourt, Brace and Company, 1956
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