Torrington, Derek, 1931-
Prentice-Hall, 1994
Buku Teks
Preager, 2003
Buku Teks
Hill, Charles W. L., author
Salemba Empat, 2014
Buku Teks
Church, Peter (Peter C.), editor
Murmeli Pty Limited, 1999
Buku Teks
edited by Ying Guo, Hussain G. Rammal, Peter J. Dowling
Emerald, 2016
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