Helt Rinehart and winston, 1970
Buku Teks
McCullers, Levis D., 1936-, author
John Wiley & Sons, 1982
Buku Teks
Rankine, Graeme W., author
Prentice-Hall, 1990
Buku Teks
Ingram, Robert W., author
Brington, 1980
Buku Teks
Zeff, Stephen A., author
McGraw-Hill, 1994
Buku Teks