Wight, James K.
[Publisher not identified], [Date of publication not identified]
Buku Teks
Nawy, Edward G.
Prentice-Hall, 1996
Buku Teks
Nawy, Edward G.
Prentice-Hall, 2009
Buku Teks
Ferguson, Phil Moss, 1899-
John Wiley & Sons, 1988
Buku Teks SO
Chu-Kia, Wang, author
Harper and Row , 1985
Buku Teks SO