Noble, David W.
Burgess Publishing Company, 1981
Buku Teks
Wiebe, Robert H.
Harvart University Press , 1962
Buku Teks
Nevins, Allan, 1890-1971, author
Macmillan, 1927
Buku Teks
Nevins, Allan, 1890-1971, author
Macmillan, 1957
Buku Teks
Taylor, Donald H., Jr, author
[Springer, ], 2012
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