Sobolev, Leonid, author
The big refit
Progress Publishers, 1965
 Buku Teks
West, Morris, author
The big story
Coronet Books, 1957
 Buku Teks
Hunt, Alfred
The management consultant / Alfred Hunt
N.Y. John Wiley & Sons , 1977
 Buku Teks
Meyer, Alfred G.
Marxism / Alfred G. Meyer
Harvard University Press, 1954
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Kossmann, Alfred
De bekering / Alfred Kossmann
Em. Querido's, 1957
 Buku Teks
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