Consal X, 1996
Buku Teks SO
editors, Sulistyo-Basuki ... [and others]
National Library of Indonesia & Indonesian Library Association, 1991
Buku Referensi
edited by Derek Johnson and Mark Valenciaand
ISEAS, 2005
Buku Teks
University of Malaya Library, 1997
Buku Teks SO
Tarling, Nicholas
New Zealand Asia Institute , 2000
Buku Teks SO