Ian McNay
Open University Press, 2006
Buku Teks
edited by Peter Scott
Falmer Press , 2000
Buku Teks
Winter, Richard
London: The Falmer Press, 1996
Buku Teks
Barry Dufour ,Will Curtis
McGraw-Hill, 2011
Buku Teks
Dyhouse, Carol, author
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Buku Teks