Mayer, Colin, author
Oxford University Press, 2013
Buku Teks
Universitas Indonesia, 2011
UI - Skripsi (Open)
Antun Mardiyanta, author
Department of Administration Sciences, Faculty of Social and Political Sciences, Airlangga University, 2014
Artikel Jurnal
Gross, Martin L., author
Avon Books, 1998
Buku Teks
Albright, Madeleine, author
Harper Perenial, 2008
Buku Teks