Heru Kurnianto Tjahjono, author
Faculty of Economics and Bussiness Universitas Muhammadiyah Yogyakarta, 2015
Artikel Jurnal
Journal of Population, 10 (2) 2004 : 35-78, 2004
Artikel Jurnal
Indonesian International Education Foundation, 2001
Buku Referensi
Amcham Indonesia, 1994
Buku Referensi
Edited by Primo Rizky
Gramedia Printing, 2014
Buku Teks