Parkes, Henry Bamford
United States of America : a history / Henry Bamford Parkes
Alfred A. Knoft, 1968.
 Buku Teks
Harrington, Michael
The other America : poverty in the United States / Michael Harrington.
Penguin Books, 1981
 Buku Teks
Osol, Arthur, 1905-1988, author
The dispensatory of the united states of America 25th edition
J. B. Lippincott, 1960
 Buku Referensi
Risjord, Norman K., author
America a history of the United States/Norman K.Risjord
Prentice-Hall, 1985
 Buku Teks
Cassara, Ernestt, author
History of the United States of America: a guide to information sources
Gale Research Coompany, 1977
 Buku Teks
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