Aris Ananta
Demographic Institute, Faculty of Economics, University of Indonesia, 1995
Buku Teks
Brakel-Papenhuyzen, Clara
Faculty of Humanities University of Indonesia, 2010
Artikel Jurnal
PEMESA,
Majalah, Jurnal, Buletin
Emerald Publishing Limited, 2019
eBooks
by Alan Samagalki ... [and others]
Lonely Planet, 1985
Buku Teks SO