Artikel Jurnal
edited by Robert A. Becker
An Elgar research collection, 2013
Buku Teks
edited by Lorenzo Cappellari, Solomon W. Polachek, Konstantinos Tatsiramos
Emerald, 2016
eBooks
Doh C. Shin
Cambridge University Press , 1999
Buku Teks
International Cultural Foundation, 1980
Buku Teks