Ilyon, author
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Buku Teks
Argiielles, Alexander, author
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Buku Teks
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Routledge & Kegan Paul, 1959
Buku Teks
Hacker, Andrew
McGraw-Hill, 1973
Buku Teks
John, Kie-chiang Oh
Cornel University Press, 1999
Buku Teks