Butler, Samuel
Erewhom or over the range; with an efter word by Kingsley Amis
New York, New American Library, 1961
 Buku Teks
Blumenfeld, Yorick
2099: a eutopia / Yorick Blumenfeld
Thames and Hudson, 1999
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Bellamy, Edward
Looking Backward / penulis, Erdward Bellamy
The New American Library , 1960
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White, Robert M.
Long range order in solids
Academic Press, 1979
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Wechsler, David
Range of human capacities
Williams & Wilkins, 1952
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