editors, Donald D. Carr, Norman Herz
Pergamon Press, 1989
Buku Referensi
Bangkit Indriyana, author
2013
UI - Tesis (Membership)
Johanna Evasari, author
2013
UI - Tesis (Membership)
Raggatt, H.G.
Lansdowne Press, 1968
Buku Teks
Wang, K.P.
Westview Press, 1977
Buku Teks