Artikel Jurnal
Barzelay, Michael, author
University of California Press, 2001
Buku Teks
edited by Massimo Sargiacomo
McGraw-Hill, 2013
Buku Teks
Lane, Jan-Erik
Routledge , 2000
Buku Teks
Edited by Robert F. Durant, Jennifer R.S. Durant
CRC Press, 2013
Buku Teks