Ginting, Sutradara, author
Institute for Policy and Community Development Studies, 2006
Buku Teks
PSDR-LIPI, {s.a.}
Majalah, Jurnal, Buletin
Marpaung, Lintje Anna, author
Andi, 2018
Buku Teks
Departemen Penerangan RI, [date of publication not identified]
Buku Teks
RoutledgeCurzon, 2003
Buku Teks