Artikel Jurnal
Firmanzah
University of Indonesia. Faculty of Economics, 2008
Artikel Jurnal
Edward Elgar , 2003
Buku Teks
Francesco Calabro, Lucia Della Spina, Carmelina Bevilacqua, editor
Springer, 2018
Buku Teks
Jacobs, James B.
Cornell University Press, 1983
Buku Teks