Preston, H. Kent
McGraw-Hill, 1967
Buku Teks
Leonhardt, Fritz
Wilhelm Earnst & Sohn, 1964
Buku Teks
Raju, N. Krishna
Tata McGraw-Hill, 1983
Buku Teks
Nilson, Arthur H.
New York: John Wiley & Sons, 1987
Buku Teks
Raju, N. Krishna
Erlangga, 1981
Buku Teks