[publisher not identified], [date of publication not identified]
Buku Teks
Doel, J.van den, author
Erlangga, 1988
Buku Teks
Maswadi Rauf, author
UI-Press, 1997
UI - Pidato
Dahl, Robert A., 1915-2014, author
Yayasan Obor Indonesia, 2001
Buku Teks
Artikel Jurnal