Mayall, James B. L., author
Standard Publishers, 2009
Buku Teks
Hay, Peter
University of Illinois Press, 1966
Buku Teks
Parish, Matthew, author
Edward Elgar, 2011
Buku Teks
Gardner, Richard N.
Dell Publishing Co., Inc., 1965
Buku Teks
Carayannis, Elias G., author
[, Springer], 2012
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