edited by A. Phillips Griffiths
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Buku Teks
Garry L. Hagberg and Walter Jost, editors
Wiley Balckwell, 2010
Buku Teks
New, Christopher
Routledge, 1999
Buku Teks
Weston, Michael
Routledge , 2001
Buku Teks
Baldwin, Robert C.
Ronald Press, 1950
Buku Teks