Campos, D. Reide de
Collezione Silvana,
Buku Referensi
Sanches, Alfonso Emilio Perez
Fabbri, 1970
Buku Referensi
Roberts, Albert R.
Springer-Verlag, 2012
eBooks
Fatma Lestari
Universitas Indonesia, 1997
UI - Tesis Membership
Prasad, Urogan
Grasindo, 2003
Buku Teks