Gregory, Derek, author
McGraw-Hill , 1978
Buku Teks
Glaz, Joseph, author
Springer, 2001
Buku Teks
Emilio Porcu, editor
[Springer-Verlag, ], 2012
eBooks
Tippet, L.H.C.
Oxford University Press, 1950
Buku Teks
Fleming, Michael C., author
Prentice-Hall, 1991
Buku Teks