Betty Dwi Kurnianingsih
1994
UI - Tesis (Membership)
Smith, Charles A.
Bhuana Ilmu Populer, 2008
Buku Teks
Vitriani Sumarlis
1997
UI - Skripsi (Membership)
Gurian, Michael
Serambi Ilmu Semesta, 2006
Buku Teks
Universitas Indonesia, 2007
UI - Skripsi (Membership)