Zahn, Markus
John Wiley & Sons, 1979
Buku Teks
Wangsness, Roald K.
John Wiley & Sons, 1979
Buku Teks
Ferraro, V.C.A.
Athlone Press, 1962
Buku Teks
Siegel, Daniel M.
Cambridge University Press, 1991
Buku Teks
Reitz, John R.
Addison-Wesley, 1993
Buku Teks