Freeman, Roger L., author
Wiley-Interscience, 2004
Buku Teks
Freeman, Roger L.
John Wiley & Sons, 1980
Buku Teks
Lindsey, William C
Prentice-Hall, 1973
Buku Teks
Wilson, Warren E., author
McGraw-Hill, 1965
Buku Teks
Donald H. Hamsher, editor-in-chief
McGraw-Hill, 1967
Buku Referensi