Brekke, Pal, author
[Springer, ], 2012
eBooks
Midgley, Mary, author
Routledge, 2006
Buku Teks
O`Dowd, Bernard, author
Angust & Robertson, 1963
Buku Teks
Kennedy, X. J., author
Pearson Longman , 2005
Buku Teks
Legge, James, author
The Chinese Book Company, 1967
Buku Teks