David Y.W. Ho
Butterworth Asia, 1998
Buku Teks
Kratovil, Robert, author
Prentice-Hall, 1974
Buku Teks
Bergfield, Philip B., author
McGraw-Hill, c1979
Buku Teks
Sirmans, C. F., author
McGraw-Hill , 1985
Buku Teks
Nelson, Grant S., author
West Publishing, 1992
Buku Teks