Miller, Lynn H., author
Westview Press, 1985
Buku Teks
Millis, Walter
Atheneum, 1965
Buku Teks
Friedmann, Wolfgang, 1907-1972, author
Macmillan, 1951
Buku Teks
Mansbach, Richard W., author
Houghton Miffiln, 2000
Buku Teks
Goldmann, Kjell, author
Routledge, 1996
Buku Teks