Wood, Frank
Pearson Prentice Hall, 1999
Buku Teks
Keith, Lyman A., author
Prentice-Hall, 1985
Buku Teks
Mueller, Gerhard G., author
Irwin, 1991
Buku Teks
Johnson, Eldred A., author
McGraw-Hill, 1959
Buku Teks
Meigs, Robert F., author
McGraw-Hill, 1990
Buku Teks