Sonde, B.S.
Wiley Eastern Limited, 1980
Buku Teks
Hodges, David A., author
McGraw-Hill, 1983
Buku Teks
Hodges, David A., author
McGraw-Hill, 1988
Buku Teks
Jain, R. P.
Tata McGraw-Hill , 1983
Buku Teks
Kasper, Joseph E., author
Prentice-Hall, 1983
Buku Teks