Bell, Stuart, author
Blackstone Press, 2001
Buku Teks
Miller, G. Tyler (George Tyler), 1902-1988, author
Wadsworth, 1988
Buku Teks
Lucas, A.M., author
Australia International Press , 1979
Buku Teks
Yingyi, Situ, author
Sage Publications, 2000
Buku Teks
Ford, Andrew
Island Press, 1999
Buku Teks