Fadillah Putra, author
Universitas Brawijaya Press, 2012
Buku Teks
edited by Stephen P. Osborne
Routledge, 2010
Buku Teks
Oliphant, Ken, author
Intersentia, 2017
eBooks
Chandos , 2013
eBooks
Alderfer, Harold F., author
Frederick A. Praeger, 1967
Buku Teks