Rodriguez, Rita M., author
Prentice-Hall, 1984
Buku Teks
Hodgetts, Richard M., author
McGraw-Hill/Irwin , 2003
Buku Teks
Hodgetts, Richard M., author
Irwin McGraw-Hill, 200
Buku Teks
Evans, Paul, author
McGraw-Hill , 2002
Buku Teks
Lane, Henry W., 1942-, author
Blackwell, 1997
Buku Teks