Sembiring, Nasib, author
Kanisius, 2013
Buku Teks
Kreutzmann, Hermann, editor
Springer, 2012
eBooks
edited by G. Alexander and O.B. Williams
Sydney University Press, 1973
Buku Teks
Hari Astu Anggoro, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2004
UI - Skripsi (Membership)
Davidson, B.R., author
Melbourne University Press, 1972
Buku Teks