Harris, Joseph P.
The Brookings Institution, 1964
Buku Teks
Corson, John J., author
McGraw-Hill , 1963
Buku Teks
Harvard University Press, 1991
Buku Teks
Buckley, Page S.
Instrument Society of America, 1985
Buku Teks
Harris, David P.
McGraw-Hill, 1969
Buku Teks