Lehman, B.H.
Carlyle's theory of the hero its sources development, history, and influence on Carlyle's work: a study of a nineteenth century idea
Duke University Press, 1928
Buku Teks
Cairns, John C.
The nineteenth century 1815-1914
Free Press, 1965
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Gooch, G.P.
History and historians in the nineteenth century
Beacon Press, 1968
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Thomas, David
England in the nineteenth century 1815-1914
Penguin Books, 1963
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Hearder, H.
Europe in the nineteenth century
Buku Teks