Hendeson, Ronald F.
Institute of Applied Economic and Social Research University of Melbourne, 1970
Buku Teks
McGraw-Hill, 1994
Buku Teks
Garton, Alison F
Hove Lawrence Erlbaum Associates , 1995
Buku Teks
Kortschak, Irfan, author
Lontar Foundation, 2010
Buku Teks
Kess, Joseph F.
John Benjamin B.V., 1981
Buku Teks