Wight, James K., author
[publisher not identified], [date of publication not identified]
Buku Teks
Forsyth, Benjamin, author
McGraw-Hill, 1971
Buku Teks
Nawy, Edward G., author
Prentice-Hall, 1996
Buku Teks
Cowan, Henry J., author
Prentice-Hall, 1982
Buku Teks
Ferguson, Phil Moss, 1899-, author
Wiley, 1979
Buku Teks