Beamish, Paul W., 1953-, author
Irwin, 1997
Buku Teks
Fayerweather, John
McGraw-Hill , 1960
Buku Teks
Rodriguez, Rita M., author
Prentice-Hall, 1979
Buku Teks
Rodriguez, Rita M., author
Prentice-Hall, 1984
Buku Teks
Rodriguez, Rita M., author
Prentice-Hall, 1976
Buku Teks