Sharma, Hari C., author
CRC Press, 2009
Buku Teks
by Peter J. May [and others]
Routledge, 1996
Buku Teks
Shmelev, Stanislav E., author
[Springer, Springer], 2012
eBooks
Pedigo, Larry P., author
Prentice-Hall, 1999
Buku Teks
Wheeler, Stephen, author
Routledge, 2013
Buku Teks