Artikel Jurnal
Robinson, I.S.
John Wiley & Sons, 1994
Buku Teks
edited by Rosa Lasaponara and Nicola Masini
Springer, 2012
eBooks
Rahmat Rizkiyanto
Fakultas Ilmu Komputer Universitas Indonesia, 2021
UI - Tesis (Membership)
edited by Andrew Skidmore
Taylor and Francis, 2002
Buku Teks