edited by Nick Bentley
Routledge, 2005
Buku Teks
edited by Theo D`Haen and Hans Bertens
Rodopi, 1993
Buku Teks
Karl, Frederick R., author
Farrar, Straus and Giroux, 1964
Buku Teks
Hamalian, Leo, author
McGraw-Hill, 1967
Buku Teks
Russell, John David, author
Johns Hopkins University Press, 1979
Buku Teks