Potten, A.J. van, author
Rabobank International Group, 1966
Buku Teks
Dossani, Rafiq, author
American Management Association, 2008
eBooks
Basu, Kaushik
Permanent Black, 2007
Buku Teks
Upadhya, Carol, author
Oxford University Press, 2016
eBooks
Sartori, Andrew, 1969-, author
Univercity of Chicago Press, 2008
Buku Teks