Stewart, Ian
Chapman & Hall, 1992
Buku Teks SO
Siegel, Daniel M.
Cambridge University Press, 1991
Buku Teks
Ginzburg, Abraham
Academic Press, 1968
Buku Teks
Bailley, Norman T. J.
Charles Griffin, 1975
Buku Teks
Zahn, Markus
John Wiley & Sons, 1979
Buku Teks