OConnor, Frederick H., author
National Textbook Company, 1990
Buku Referensi
White, David Manning
Macmillan, 1983
Buku Teks
Bodley, R. V. C., author
Little, Brown, 1955
Buku Teks
Shapcott, Thomas W. (Thomas William), 1935-, author
Agus & Robertson Book, 1989
Buku Teks
Hamadi, Youssef, editor
Springer-Verlag, 2011
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