Casley, D.J.
Clarendon Press Oxford, 1982
Buku Teks
Agresti, Alan, author
Pearson - Prentice Hall, 2009
Buku Teks
Universitas Indonesia, 2006
UI - Skripsi (Membership)
Springer, 2012
eBooks
Agostino Di Ciaccio, editor
[, Springer-Verlag ], 2012
eBooks