Priest, Graham, author
Cambridge University Press, 2008
eBooks
Copi, Irving M., author
Macmillan, 1972
Buku Teks
Copi, Irving M., author
Macmillan, 1961
Buku Teks
Yanushkevich, Svetlana N., author
CRC Press, Taylor & Francis Group, 2008
Buku Teks
Marcovitz, Alan B.
McGraw-Hil, 2002
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