Cleland, David I.
McGraw-Hill , 1980
Buku Teks
Cleland, David I.
McGraw-Hill, 1981
Buku Teks
John E. Ullmann, editor, Donald A. Christman, Bert Holtje, associate editors.
John Wiley & Sons, 1986
Buku Referensi
Cronstedt, Val
McGraw-Hill Book Company, Inc., 1961
Buku Teks
Shannon, Robert E.
John Wiley & Sons, 1980
Buku Teks