Bell, Brian J., author
MacDonald & Evans, 1974
Buku Teks
Wight, James K., author
Pearson, 2016
Buku Teks
MacGregor, James G., author
Prentice-Hall, 2005
Buku Teks
Nawy, Edward G., author
Prentice-Hall, 1985
Buku Teks
Wight, James K., author
Prentice-Hall, 2009
Buku Teks