Augustine, Saint, author
Y.M. Dent & Sons, 1945
Buku Teks
Norman, Colin, author
Norton, 1981
Buku Teks
Wales, H.G. Quaritch, author
Bernard Quaritch Ltd, 1958
Buku Teks
Oakley, Barry, author
University of Queensland Press, 1980
Buku Teks
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 1995
UI - Skripsi (Membership)