Wilson, Woodrow
Columbia University, [date of publication not identified]
Buku Teks
Silalahi, Teresia Tjan, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1969
UI - Skripsi (Membership)
Wilson, Dick, author
Penguin Books, 1968
Buku Teks
Basil Blackwell, 1948
Buku Teks
Tarmidja Kartawidjaya, author
1991
UI - Tesis (Membership)