Mizan, 1998
Buku Teks
edited by Hal Hill and Terry Hull
Australian National University (A.N.U.), 1990
Buku Teks
Ishak Rafick, author
Indonesia Penerbit Change, 2014
Buku Teks
Hutagalung, Daniel P., author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1996
UI - Skripsi (Membership)
Baramuli, A. A. (Arnold Achmad), 1930-2006, author
Manikgeni, 1998
Buku Teks