Wilcocks, Charles
Oxford University Press, 1950
Buku Teks
Tendler, Judith.
The Johns Hopkins University Press, 1997
Buku Teks
White, Hayden, author
Johns Hopkins University Press, 1985
Buku Teks
edited by D.J. Greenland and R. Lal
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Buku Teks
Design Media Publishing Limited
Design Media Publishing Limited, 2010
Buku Teks